In the facility, every one should carry a ranging tag which can be
a sticker tag or a wristband. Our alarm system continuously
monitors the actual distance between two tags. Once the distance
between two people is less than the approved parameter set in
advance(e.g, 6 feet), the system will send alarm signals to them:
both sound and vibration. So individuals know when to adjust their
current distance to a proper social distance.
More importantly, each alarm event will be recorded in the tag and
upload to the server through the wireless gateway or by the wired
connection that the tag is connected to computer and then gets to
the server via network, through which a contact tracing solution is
achieved.