A home or office is remotely monitored by an authorized caller using wireless piconet networks between personal wireless piconet identifier devices worn or carried by particular persons and a remotely accessible access monitor base unit. Persons are monitored by an authorized remote person using a personal...http://www.google.fr/patents/US7177668?utm_source=gb-gplus-shareBrevet US7177668 - Access monitoring via piconet connection to telephone
Access monitoring via piconet connection to telephone
