WO2015119339A1

WO2015119339A1 - Electronic stamp

Info

Publication number: WO2015119339A1
Application number: PCT/KR2014/005914
Authority: WO
Inventors: 이윤희
Original assignee: 모비두 주식회사
Priority date: 2014-02-05
Filing date: 2014-07-02
Publication date: 2015-08-13

Abstract

Disclosed is an electronic stamp. According to one embodiment, the electronic stamp comprises: a sound wave generating unit for generating a reference sound wave; a control unit for modulating to convert the reference sound wave into a transmission sound wave, by using uniquely attributed identification information; an output unit for outputting the transmission sound wave; and a contact unit, which includes at least one conductive tip, for generating at least one touch event by being brought into contact with a touch interface of a user terminal.

Description

Electronic stamp

The embodiments below relate to an electronic stamp that can be used to earn stamps, coupons, tickets, or attendance at a coffee shop, restaurant, beauty salon or theater.

To earn a stamp at a coffee shop or to authenticate a visit to a conference, the user must carry a coupon card or a visit authorization card. However, recently, due to the development of a smartphone and an application driven on the smartphone, stamp accumulation or visit authentication through the application may be performed.

The user of the smartphone can obtain a stamp or visit authentication from the authenticator by photographing the QR code or showing the barcode to the authenticator. In addition, the user of the smartphone can receive stamps or visit authentication from the authenticator through a short-range wireless communication technology such as NFC.

Korean Patent No. 1321745 filed on Feb. 03, 2012 and filed on Oct. 18, 2013 (name of the invention: smart stamp system and its use).

As the electronic stamp outputs sound waves and contacts the user terminal, authentication for the user terminal can be easily performed by the electronic stamp.

The electronic stamp may allow not only a single touch but also multi-touch to the user terminal so that other terminals other than the user terminal steal only sound waves so that authentication is not performed.

Electronic stamp according to one side is a sound wave generation unit for generating a reference sound wave; A control unit for modulating the reference sound wave into unique transmission information using uniquely assigned identification information; An output unit for outputting the transmission sound wave; And a contact unit including one or more conductive tips, the contact unit generating at least one touch event in contact with the touch interface of the user terminal, wherein the touch event is a predetermined authentication item according to an authentication result of the identification information. It may be triggered to be visually displayed on the touch interface of the user terminal.

According to an embodiment, the identification information may be changed every predetermined time.

In this case, the identification information may change at least some of the data every predetermined time.

According to an embodiment, the controller may control the amplitude of the transmission sound wave according to a predetermined number of times.

According to an embodiment, the sound wave generator may include: a reference sound wave generator configured to generate the reference sound waves; A cancel sound wave generator for generating a cancel sound wave for canceling the authentication item; And a switching unit for switching the reference sound wave generation unit and the cancel sound wave generation unit, wherein the control unit controls the switching unit according to a user input, wherein the cancellation sound wave is visualized in the touch interface of the user terminal. Can be triggered to disappear.

The sound wave generator may generate a plurality of reference sound waves having different carrier frequencies, and the carrier frequency may determine at least one of deletion, type, and number of the authentication items displayed on the touch interface.

According to an embodiment, the contact unit may generate the touch event according to a predefined pattern.

The reference sound wave may be a sound file in the inaudible frequency band.

Electronic stamp according to the other side is a housing portion including a gripping portion that can be gripped by the user; A controller including one or more circuit elements housed in the housing portion; And a contact including at least one conductive tip contacting the touch interface of the user terminal, wherein the controller comprises: a sound wave generator configured to generate a reference sound wave; A memory for storing uniquely assigned identification information; A processor configured to modulate the reference sound wave and convert the reference sound wave into a transmission sound wave using the identification information; And an output unit for outputting the transmission sound wave.

The identification information may be changed every predetermined time.

In addition, the processor may control the amplitude of the transmission sound wave according to a predetermined number of times.

The sound wave generator may include a reference sound wave generator that generates the reference sound wave; A cancel sound wave generator for generating a cancel sound wave for canceling the authentication item; And a switching unit for switching the reference sound wave generation unit and the cancel sound wave generation unit, wherein the processor controls the switching unit according to a user input, wherein the cancellation sound wave is visually displayed in the touch interface of the user terminal. You can trigger it to disappear.

The contact unit may generate a touch event according to a predefined pattern.

The electronic stamp outputs sound waves and the user terminal can be easily authenticated by the electronic stamp by contacting the user terminal.

1 is a diagram illustrating a configuration of an electronic stamp according to an embodiment.

2 is a diagram for describing converting a reference sound wave into a transmission sound wave by using identification information, according to an exemplary embodiment.

3 is a flowchart illustrating an operation of an electronic stamp and a terminal constituting an authentication system according to an exemplary embodiment.

4 is a diagram illustrating an electronic stamp constituting an authentication system and an operation between terminals according to an embodiment.

5 is a view for explaining the configuration of an electronic stamp according to another embodiment.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. However, the present invention is not limited or limited by the embodiments. Also, like reference numerals in the drawings denote like elements.

Referring to FIG. 1, an electronic stamp 100 according to an embodiment includes a sound wave generator 110, a controller 120, an output unit 130, and a contact unit 140.

According to an embodiment, the sound wave generator 110 may generate a reference sound wave. The reference sound wave may be a sound file in the inaudible frequency band. For example, the frequency of the reference sound wave may be between 18 kHz and 22 kHz.

According to an embodiment, the controller 120 may modulate the reference sound wave by using uniquely assigned identification information. For example, the controller 120 may modulate the reference sound wave using analog modulation techniques of amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). In addition, the controller 120 may modulate the reference sound wave using a pulse modulation technique as well as a digital modulation technique such as quadrature amplitude modulation (QAM). The above-described modulation technique is merely an example according to an exemplary embodiment, and the modulation technique used by the controller 120 to modulate the reference sound wave is not limited to the above-described matter.

According to an embodiment, the controller 120 may modulate the reference sound wave and convert the reference sound wave into a transmission sound wave. The transmission sound wave is a sound wave in which uniquely assigned identification information is included in the reference sound wave. The identification information may be uniquely given to the electronic stamp 100. The electronic stamp 100 may be distinguished from other electronic stamps through the identification information.

According to an embodiment, the output unit 130 may output transmission sound waves. For example, the output unit 130 may output the transmission sound wave through the speaker. The user terminal may receive the transmission sound wave output from the electronic stamp. Here, the electronic stamp 100 may be located within a predetermined distance (for example, 40 cm) from the user terminal so that the user terminal may receive the transmission sound waves. In addition, the electronic stamp 130 may control the output strength of the transmission sound wave transmitted to the user terminal.

According to one embodiment, the contact 140 may include one or more conductive tips 141 to 143. In addition, the contact unit 140 may generate at least one touch event by contacting the touch interface of the user terminal. The touch event may be generated by an electrical signal generated when the tips 141 to 143 contact the touch interface. According to another side, the touch event may be generated by pressure applied to the touch interface using the tips 141 to 143. The generation of the above-described touch event is only an example matter according to an embodiment, and the generation of the touch event is not limited to the above-described matter.

According to an embodiment, the touch event may trigger a predetermined authentication item to be visually displayed on the touch interface of the user terminal according to the authentication result of the identification information.

More specifically, the user terminal may demodulate the transmitted sound waves to extract identification information included in the transmitted sound waves. The user terminal may check whether the extracted identification information matches the predefined information. If there is a match, the authentication item is displayed on the touch interface when at least one touch event occurs. If they do not match, the authentication item may not be displayed on the touch interface even when at least one touch event occurs. That is, if the user terminal authenticates the identification information, the authentication item is displayed on the touch interface according to the touch event, and if the user terminal does not authenticate the identification information, the authentication item may not be displayed on the touch interface even if there is a touch event.

Also, the touch event may trigger to provide at least one of auditory feedback and tactile feedback by the user terminal according to the authentication result of the identification information. For example, when the authentication item is displayed on the touch interface of the user terminal, the sound effect may be output or the user terminal may vibrate.

According to one embodiment, the uniquely assigned identification information may be changed every predetermined time. In addition, the identification information may change at least some of the data every predetermined time. That is, the uniquely-identified identification information may include fixed data that does not change with time and variation data that change every predetermined time. For example, when the identification information is a binary number 1010101010, the first seven digits 1010101 do not change, but the third three 010 may change every predetermined time.

According to an embodiment, the controller 120 may control the amplitude of the transmission sound wave according to a predetermined number of times. Due to interference that may occur in the surrounding environment of the user terminal, the user terminal may not properly receive the transmission sound waves output from the electronic stamp 100. If the user terminal does not properly receive the transmission sound waves, it is difficult to accurately extract the identification information contained in the transmission sound waves. Therefore, the electronic stamp 100 may output the transmission sound waves one or more times so that the user terminal may properly receive the transmission sound waves. By repeatedly receiving the transmission sound wave, the user terminal may accurately extract identification information included in the transmission sound wave.

In addition, when the electronic stamp 100 outputs the transmission sound wave according to a predetermined number of times, the electronic stamp 100 may control the amplitude of the transmission sound wave whenever the transmission sound wave is output. For example, when the electronic stamp 100 outputs a transmission sound wave three times, the first transmission sound wave may have a preset amplitude, and the second transmission sound wave may have an amplitude greater than the preset amplitude. The third transmission sound wave may have an amplitude smaller than the preset amplitude.

According to an embodiment, the sound wave generator 110 may include a reference sound wave generator 111 for generating a reference sound wave, a cancel sound wave generator 112 for generating a cancel sound wave for canceling an authentication item, and a reference sound wave generator ( 111 and the switching unit 113 for switching the cancellation sound wave generator 112. The user can select whether to generate a reference sound wave or a cancel sound wave. According to the user's selection, the controller 120 may control the switching unit 113.

According to an embodiment, the sound wave generator 110 may generate a plurality of reference sound waves having different carrier frequencies, and the plurality of reference sound waves are inaudible frequency bands (for example, 18 kHz to 22 kHz). Can be in.

One of the plurality of reference sound waves may be the aforementioned cancel sound file. The user terminal may determine whether to display or cancel the authentication item by identifying the carrier frequency of the received transmission sound wave.

In addition, at least one of a type and a number of authentication items displayed on the touch interface of the user terminal may be determined according to the carrier frequency. The sound wave generator 110 may generate a plurality of reference sound waves having different carrier frequencies, and may convert each of them into transmission sound waves. The transmitted sound wave contains uniquely assigned identification information. When each transmission sound wave is received by the user terminal and a touch event occurs, a predetermined authentication item corresponding to the transmission sound wave may be displayed on the touch interface of the user terminal. That is, at least one of the type and number of authentication items displayed on the touch interface of the user terminal differs depending on the sound waves generated by the electronic stamp 100. Here, the controller 120 may control the sound wave generator 110 according to a user input so that any one of the plurality of reference sound waves is generated.

For example, when a customer purchases coffee in a coffee shop, the electronic stamp 100 may modulate the first reference sound wave having the first carrier frequency to convert the first reference sound wave into the first transmission sound wave. 1 transmits a sound wave to the user terminal. The user terminal may receive the first transmission sound wave and, if there is a touch event, display the first authentication item corresponding to the first transmission sound wave. When a customer purchases a dessert at a coffee shop, the electronic stamp 100 may convert a second reference sound wave having a second carrier frequency into a second transmission sound wave, and output the second transmission sound wave to the user terminal. The user terminal receives the second transmission sound wave, and when a touch event occurs, the user terminal may display a second authentication item corresponding to the second transmission sound wave.

As another example, when a customer purchases three cups of coffee at a coffee shop, the electronic stamp 100 may convert the third sound wave into a third transmission sound wave by modulating a third reference sound wave having a third carrier frequency. The third transmission sound wave may be output to the user terminal. The user terminal may receive the third transmission sound wave, and if there is a touch event, display the authentication item corresponding to the third transmission sound wave. Here, the user terminal may display three authentication items. When the fourth transmission sound wave having the fourth carrier frequency is received, the user terminal may display four authentication items.

As another example, when the customer of the coffee shop is a male, the electronic stamp 100 may generate a fifth reference sound wave having a fifth carrier frequency. In addition, when the customer of the coffee shop is a female, the electronic stamp 100 may generate a sixth reference sound wave having a sixth carrier frequency.

According to an embodiment, the reference sound wave and the cancellation sound wave may have the same carrier frequency, and information included in the reference sound wave and information included in the cancellation sound wave may be different. For example, the reference sound wave may include uniquely assigned identification information, and the cancel sound wave may include information indicating cancellation of the authentication item.

According to an embodiment, the contact unit 140 may generate a touch event according to a predefined pattern. The predefined pattern may be determined by at least one of the position and the number of the tips 141 to 143. If there is only one tip, the pattern of occurrence of the touch event is limited. When there are a plurality of tips, a plurality of touch events may occur, and a plurality of touch event generation patterns may also be provided.

Even if a third party terminal other than the user terminal receives the transmission sound wave, if there is no touch event according to the predefined pattern, the authentication item is not displayed on the third party terminal. That is, by using a touch event according to a predefined pattern, the third party terminal may not display the authentication item without permission.

According to an embodiment, the occurrence pattern of the touch event may be identified by the user terminal, and the user terminal may determine whether the occurrence pattern of the touch event matches the predefined pattern. When the occurrence pattern of the touch event matches the predefined pattern, the user terminal may visually display the authentication item on the touch interface.

According to an embodiment, when a plurality of touch events occur, a plurality of touch events may occur simultaneously.

According to an embodiment, the electronic stamp 200 may generate a cyclic redundancy check (CRC) bit using the identification information. The electronic stamp 200 may transmit the identification information and the CRC bit to the user terminal by modulating the reference sound wave by using the identification information and the CRC bit. The user terminal may receive modulated sound waves, that is, sound waves including identification information and CRC bits, and extract identification information and CRC bits included in the sound waves. Here, the user terminal may check whether the identification information extracted using the CRC bit matches the identification information received from the electronic stamp 200.

2, the number of each digit of the binarized identification information is mapped to a predetermined sound wave. More specifically, the number of 2 ⁰ digits of the binarized identification information may be mapped to a sound wave having a frequency of 1 Hz. 2 ¹ digits of the binarized identification information may be mapped to sound waves having a frequency of 2 Hz, and 2 ² digits may be mapped to sound waves having 3 Hz. In the above manner, the digits of the digitized identification information may be mapped to sound waves having different frequencies.

According to one embodiment, not all of the binarized identification information may be used to generate a unit length of sound. For example, 2 ⁰ digits of the binarized identification information may be 1, and data of 2 ⁰ digits may be used to generate sound waves of 10 Hz (= 1 * 10 * 1). The 2 ¹ digits of the binarized identification information are 0, and the 2 ¹ digit data cannot be used for sound wave generation. Of the identification information binarized by the above method, 0 cannot be used for sound wave generation. When the identification information is 1001, a sound wave of 40 Hz + 10 Hz may be generated. The sound waves of 40 Hz + 10 Hz are sound waves corresponding to the identification information. The sound wave corresponding to the identification information may be included in the reference sound wave having a carrier frequency of 20 kHz. For example, the electronic stamp 200 may convert the reference sound wave into the transmission sound wave by including the sound wave corresponding to the identification information in the reference sound wave using the above-described modulation technique. In the case of the CRC bit, each digit of the CRC bit may be mapped to a predetermined sound wave. The sound wave corresponding to the CRC bit generated as a result of the mapping may be included in the reference sound wave through the above-described modulation technique.

The electronic stamp 200 may output the transmission sound wave through the speaker.

3 is a flowchart illustrating an operation between an electronic stamp constituting an authentication system and a user terminal, according to an exemplary embodiment.

Referring to FIG. 3, the electronic stamp 310 generates a reference sound wave (311). The frequency of the reference sound wave may be in the inaudible frequency band (eg, 18 kHz to 22 kHz).

The electronic stamp 310 may convert the reference sound wave into a transmission sound wave. More specifically, the electronic stamp 310 may convert the reference sound wave into a transmission sound wave by modulating the reference sound wave using uniquely assigned identification information.

The electronic stamp 310 outputs the transmitted sound wave (313). The user terminal 320 may receive a transmission sound wave output from the electronic stamp 310.

The user terminal 320 may provide a visual feedback to the user according to the reception of the transmitted sound waves (321). The user terminal 320 may display visual feedback indicating that the transmission sound wave has been received in response to receiving the transmission sound wave on the touch interface.

More specifically, the user terminal 320 may demodulate the transmitted sound waves to extract identification information included in the transmitted sound waves. The user terminal 320 may determine whether the extracted identification information matches the predefined identification information. If there is a match, the user terminal 320 may display visual feedback on the touch interface.

In relation to the visual feedback, the user terminal 320 may change the graphic attribute of the area in which the authentication item is to be displayed. For example, the user terminal 320 may change the color of the boundary of the area where the authentication item is to be displayed or change the shade or color of the area.

The electronic stamp 310 is in contact with the touch interface of the user terminal 320 (314). According to the contact, a signal is generated between the electronic stamp 310 and the user terminal 320. The signal may be an electrical signal or may be a pressure upon contact.

A touch event occurs in the touch interface of the user terminal 320 (322). The occurrence of the touch event may be caused by an electrical signal or pressure as described above. Although not shown in FIG. 3, the touch event may occur according to a predefined pattern.

The user terminal 320 may check whether the occurrence of the touch event matches a predefined pattern. If there is a match, the user terminal 320 may display the authentication item on the touch interface (323).

4 is a diagram for describing an operation of an electronic stamp and a terminal constituting an authentication system according to an exemplary embodiment.

Referring to FIG. 4, two

authentication items

411 and 412 are displayed on the display of the user terminal 410, and the authentication item is displayed in the third area 413. The third area 413 is an area in which the authentication item is to be displayed. In order to display the third authentication item, the user terminal 410 may receive a transmission sound wave output from the electronic stamp 400.

Although not shown in FIG. 4, the user terminal 410 may provide visual feedback in response to the reception of the transmission sound waves. More specifically, the user terminal 410 may receive the transmission sound wave and check whether identification information included in the transmission sound wave matches the predefined information. If there is a match, the user terminal 410 may provide visual feedback. For example, the user terminal 410 may display the color of the boundary of the third area 413 differently from the color of other areas.

The user terminal 410 receives the transmission sound wave, checks whether the identification information matches the predefined information, and then waits for generation of one or more touch events 421 to 423. When there is no occurrence of a touch event within a predetermined time, the user terminal 410 may output a message for contacting the electronic stamp 400 to the touch interface. Alternatively, if there is no occurrence of a touch event within a predetermined time, the user terminal 410 may end the procedure for displaying the authentication item. When the procedure for displaying the authentication item is finished, the user terminal 410 may output a message for the electronic stamp 400 to retransmit the transmitted sound wave.

The touch events 421 to 423 may be generated by the contact of the electronic stamp 400. The electronic stamp 400 contacts the third region 413, and touch events 421 to 423 occur. The user terminal 410 may display the authentication item in the third area when the touch events 421 to 423 occur. In addition, the user terminal may confirm whether the touch events 421 to 423 match the predetermined pattern, and display the authentication item in the third area only when the touch event matches. For example, the user terminal 410 may know that the electronic stamp 400 is in contact with other devices through three touch event occurrence patterns.

According to one embodiment, the spacing between the tips of the electronic stamp 400 may be 15mm to 20mm. According to one embodiment, the tips 401-403 of the electronic stamp 400 can be covered with a non-conductive material (eg, rubber), and a portion of the tips 401-403 in contact with the touch interface is vision. It may not be covered with a conductive material. The thickness of the nonconductive material covering the tips 401-403 may be 7 mm. The thickness of the non-conductive material covering the tip or the gap between the aforementioned tips is merely an example, and the distance between the tips or the thickness of the non-conductive material is not limited to the foregoing.

According to an embodiment, even if the electronic stamp 400 contacts another area (eg, the sixth area) other than the third area 413, the user terminal 410 may authenticate the third item 413. Can be displayed. That is, when the occurrence pattern of the touch events 421 to 423 matches the predetermined pattern, the user terminal 410 displays the authentication item in the area where the authentication item is to be displayed regardless of the area where the electronic stamp 400 is touched. do.

Referring to FIG. 5, the electronic stamp 500 according to another embodiment includes a housing portion 510, a controller 520, and a contact portion 530.

The housing part 510 may include a gripping part which can be gripped by a user.

The controller 520 may include one or more circuit elements received in the housing 510. Here, the controller 520 controls to convert the reference sound wave into a transmission sound wave by modulating the reference sound wave using the sound wave generator 521 for generating the reference sound wave, the memory 522 for storing uniquely assigned identification information, and the identification information. The processor 523 may include an output unit 524 that outputs a transmission sound wave. The identification information may change every predetermined time.

The contact 530 may include one or more conductive tips 531 to 533 in contact with the touch interface of the user terminal.

The processor 523 may control the amplitude of the transmission sound wave according to a predetermined number of times. The processor 523 may repeatedly output the transmission sound waves, and the user terminal may repeatedly receive the transmission sound waves to accurately extract identification information included in the transmission sound waves.

The sound wave generator 521 may include a reference sound wave generator for generating a reference sound wave, a cancel sound wave generator for generating a cancel sound wave for canceling an authentication item, and a switching unit for switching the reference sound wave generator and the canceled sound wave generator. have. The cancellation sound wave may trigger the authentication item to disappear visually from the touch interface of the user terminal. Here, the processor 523 may control the switching unit according to a user input. For example, a user of the electronic stamp 500 may select whether to generate a reference sound wave or a cancel sound wave through the switch 511.

In addition, at least one of a type and a number of authentication items displayed on the touch interface of the user terminal may be determined according to the carrier frequency. The sound wave generator 521 may generate a plurality of reference sound waves having different carrier frequencies, and may convert each of the sound waves to a transmission sound wave. The transmitted sound wave contains uniquely assigned identification information. When each transmission sound wave is received by the user terminal and a touch event occurs, a predetermined authentication item corresponding to the transmission sound wave may be displayed on the touch interface of the user terminal. That is, at least one of the type and number of authentication items displayed on the touch interface of the user terminal differs depending on the sound waves generated by the electronic stamp 500. Here, the processor 523 may control the sound wave generator 521 according to a user input so that any one of the plurality of reference sound waves is generated.

The contact unit 530 may generate a touch event according to a predefined pattern. The predefined pattern may be determined based on at least one of the number of tips and the location of the tips.

Since the matters described with reference to FIGS. 1 through 4 may be applied to the electronic stamp 500 shown in FIG. 5, detailed description thereof will be omitted.

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the devices and components described in the embodiments are, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors, microcomputers, field programmable gate arrays (FPGAs). Can be implemented using one or more general purpose or special purpose computers, such as a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For convenience of explanation, one processing device may be described as being used, but one of ordinary skill in the art will appreciate that the processing device includes a plurality of processing elements and / or a plurality of types of processing elements. It can be seen that it may include. For example, the processing device may include a plurality of processors or one processor and one controller. In addition, other processing configurations are possible, such as parallel processors.

The software may include a computer program, code, instructions, or a combination of one or more of the above, and configure the processing device to operate as desired, or process it independently or collectively. You can command the device. Software and / or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device in order to be interpreted by or to provide instructions or data to the processing device. Or may be permanently or temporarily embodied in a signal wave to be transmitted. The software may be distributed over networked computer systems so that they may be stored or executed in a distributed manner. Software and data may be stored on one or more computer readable recording media.

The method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Although the embodiments have been described by the limited embodiments and the drawings as described above, various modifications and variations are possible to those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different form than the described method, or other components. Or even if replaced or substituted by equivalents, an appropriate result can be achieved.

Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the claims that follow.

Claims

A sound wave generator for generating a reference sound wave;

A control unit for modulating the reference sound wave into unique transmission information using uniquely assigned identification information;

An output unit for outputting the transmission sound wave; And

A contact including at least one conductive tip and generating at least one touch event in contact with the touch interface of the user terminal

Including,

The touch event triggers a predetermined authentication item to be visually displayed on the touch interface of the user terminal according to an authentication result of the identification information.

Electronic stamp.
The method of claim 1,

The identification information is changed every predetermined time,

Electronic stamp.
The method of claim 2,

Wherein the identification information is changed at least some of the data every predetermined time,

Electronic stamp.
The method of claim 1,

The control unit controls the amplitude of the transmission sound wave according to a predetermined number of times,

Electronic stamp.
The method of claim 1,

The sound wave generator,

A reference sound wave generator for generating the reference sound waves;

A cancel sound wave generator for generating a cancel sound wave for canceling the authentication item; And

Switching unit for switching the reference sound wave generation unit and the cancel sound wave generation unit

Including,

The controller controls the switching unit according to a user input,

The canceling sound wave triggers the authentication item to visually disappear from the touch interface of the user terminal.

Electronic stamp.
The method of claim 1,

The sound wave generation unit generates a plurality of reference sound waves different in carrier frequency,

The carrier frequency determines at least one of deletion, type, and number of the authentication items displayed on the touch interface.

Electronic stamp.
The method of claim 1,

The contact unit generates the touch event according to a predefined pattern,

Electronic stamp.
The method of claim 1,

The reference sound wave is a sound wave in the inaudible frequency band,

Electronic stamp.
A housing part including a gripping part which can be gripped by a user;

A controller including one or more circuit elements housed in the housing portion;

A contact including one or more conductive tips contacting the touch interface of the user terminal

Including,

The controller,

A sound wave generator for generating a reference sound wave;

A memory for storing uniquely assigned identification information;

A processor configured to modulate the reference sound wave and convert the reference sound wave into a transmission sound wave using the identification information; And

An output unit for outputting the transmission sound wave

Electronic stamp containing a.
The method of claim 8,

The identification information is changed every predetermined time,

Electronic stamp.
The method of claim 8,

The processor controls the amplitude of the transmission sound wave according to a predetermined number of times,

Electronic stamp.
The method of claim 8,

The sound wave generator,

A reference sound wave generator for generating the reference sound waves;

A cancel sound wave generator for generating a cancel sound wave for canceling the authentication item; And

Switching unit for switching the reference sound wave generation unit and the cancel sound wave generation unit

Including,

The processor controls the switching unit in accordance with a user input,

The canceling sound wave triggers the authentication item to visually disappear from the touch interface of the user terminal.

Electronic stamp.
The method of claim 8,

The sound wave generation unit generates a plurality of reference sound waves different in carrier frequency,

The carrier frequency determines at least one of deletion, type, and number of the authentication items displayed on the touch interface.

Electronic stamp.
The method of claim 8,

The contact unit generates a touch event according to a predefined pattern,

Electronic stamp.