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

Claim 6:
7. The sensor device of claim 6, further comprising:
a second sensor configured to:
detect a second light output by the monitored device;
in response to the second light meeting a second threshold condition, output a second sensor signal; and
in response to the second light not meeting the second threshold condition, not output the second sensor signal;

a second RFID tag including:
a second antenna configured to receive the interrogation RF signal, and
a second circuit coupled to the second antenna, the second circuit configured to receive the interrogation RF signal from the second antenna, generate a second response RF signal, and cause the second antenna to transmit the second response RF signal;

a second tag controller configured to selectively couple or decouple the second antenna to or from ground depending upon whether the second sensor signal is present, wherein coupling the second antenna to the ground prevents the second antenna from transmitting a second response RF signal.