Patent ID: 11941471
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 19:
20. A computer-readable storage medium on which are stored instructions that, when executed, cause a processor of a programmable device to perform operations of:
detecting a first state of a monitored device using a first sensor of a sensor device;
outputting a first sensor signal from the first sensor in response to the first state meeting a first threshold condition;
selectively coupling or decoupling a first antenna of the sensor device to or from ground using a first tag controller depending upon whether the first sensor signal is present, wherein:
coupling the first antenna to the ground prevents the first antenna from transmitting a first response radio frequency (RF) signal upon receiving an interrogation RF signal, and
decoupling the first antenna from the ground permits the first antenna to transmit the first response RF signal upon receiving the interrogation RF signal;

receiving the interrogation RF signal via the first antenna of the sensor device; and
transmitting the first response RF signal upon receiving the interrogation RF signal and with the first antenna being disconnected from the ground.