The present invention provides radio frequency identification devices, remote communication devices, wireless communication systems, and methods of indicating operation. According to a first aspect, a radio frequency identification device includes a substrate; communication circuitry coupled with the...http://www.google.fr/patents/US6459376?utm_source=gb-gplus-shareBrevet US6459376 - Radio frequency identification devices, remote communication devices, wireless communication systems, and methods of indicating operation
Radio frequency identification devices, remote communication devices ...
