Abstract: A RFID device with a surface treatment which interferes with the transmission of RF signals/data between the RFID device and the RF interrogator or reader. A surface treatment of either RF reflective or RF absorptive ink is deposited on a RFID device using an attenuation pattern to fine tune the read range of the RFID device thereby eliminating or reducing the occurrence of accidental or cross reads between nearby RF interrogators or readers. The surface layer may be deposited at the time of printing the labels thereby fixing the attenuation at a known level or the surface treatment may be applied in an on-demand fashion allowing the attenuation level to be varied to an individual requirement.

Abstract: A RFID label with tamper-evident capabilities that is useable with many surfaces. The RFID label has a release layer positioned between the transponder substrate and the printed ink antenna. The release layer uses a pattern of adhesive whereby different surface's cohesive strengths are accommodated. The adhesive pattern accommodates high and low substrate cohesive strength depending on which portion of the label is experiencing separation force. Because the release layer is in contact with the patterned adhesive, when the label is removed the antenna separates from the transponder substrate. The patterned adhesive may be applied only to a localized area of the label to target a specific transponder feature. The patterned adhesive may be also be combined with propagation slits in the label carrier film. The slits, when stressed, start propagating tears in the label surface ultimately severing the antenna, thereby destroying the transponder.

Abstract: A RFID device with a surface treatment which interferes with the transmission of RF signals/data between the RFID device and the RF interrogator or reader. A surface treatment of either RF reflective or RF absorptive ink is deposited on a RFID device using an attenuation pattern to fine tune the read range of the RFID device thereby eliminating or reducing the occurrence of accidental or cross reads between nearby RF interrogators or readers.

Abstract: A RFID label with tamper-evident capabilities that is useable with many surfaces. The RFID label has a release layer positioned between the transponder substrate and the printed ink antenna. The release layer uses a pattern of adhesive whereby different surface's cohesive strengths are accommodated. The adhesive pattern accommodates high and low substrate cohesive strength depending on which portion of the label is experiencing separation force. Because the release layer is in contact with the patterned adhesive, when the label is removed the antenna separates from the transponder substrate.