The present invention differs from the prior art in that the present invention provides one or a network of passive or active radio frequency identification (RFID) transceivers and antenna elements in different numbers, in various network sizes, in different configurations and on various substrates....http://www.google.fr/patents/US7712674?utm_source=gb-gplus-shareBrevet US7712674 - RFID devices for verification of correctness, reliability, functionality and security
RFID devices for verification of correctness, reliability, functionality and ...
