Tamper evident label with transponder employing multiple propagation points

摘要

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.