Patent ID: 9082057
Filing Date: 2015-07-14
Classification: G06K,H04Q

Abstract:
1. A Radio Frequency Identification (RFID) system, comprising: communication circuitry for enabling wireless communication with an RF reader; energy harvesting circuitry for generating an electric current from RF energy; a status register circuit; a sensor loop coupled to the RFID system at three pads, the three pads including: a first pad coupled to a current source, wherein the current source receives the electric current generated by the energy harvesting circuitry, a second pad coupled to the status register circuit, wherein the status register circuit is coupled to the sensor loop for indicating a broken or unbroken status of the sensor loop, and a nonvolatile memory separate from and coupled to the status register circuit for storing a status of the sensor loop based on the status of the status register circuit; wherein the communication circuitry is configured to send the stored status of the loop to the RF reader.