3m Innovative Properties Company

Sirit Technologies Inc.

Wolf Bielas

Bruce B Roesner

Jeff Shamblin

The present disclosure is directed to a system and method for tracking tampered with RFID tags. In some implementations, an RFID tag includes a tearable substrate including at least a portion of an RFID circuit. The portion of the RFID circuit is substantially destroyable in response to at least an attempt to remove the tag from a surface. In addition, the RFID includes an adhesive layer adjacent at least a portion of the tearable substrate and configured to affix the tag to the surface.

Detecting tampered with radio frequency identification tags

The present disclosure includes a system and method for conducting radio frequency signals using multiple layers. In some implementations, a signal transfer element configured to passively transfer RF signals between a first region and a second region includes a first conductor layer having a first continuous conductor configured as a first portion of a first antenna, a transmission line, and a first portion of a second antenna. The first antenna and the second antenna are configured to wirelessly receive and transmit Radio Frequency (RF) signals. The signal transfer element also includes a second conductor layer having a second continuous conductor configured as a second portion of the first antenna, a ground plane, and a second portion of the second antenna. The first conductor layer and the second conductor layer are spatially proximate such that the transmission line and the ground plane are configured to passively transfer RF signals between the first antenna and the second antenna independent of an electrical connection between the first conductor layer and the second conductor layer.

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Chula Vista, CA, United States of America

Wolf Bielas