You post a beacon periodically, other people post beacons, everyone is listening for that UUID and records and instances of it. This is how the whole thing works.
GPS would be a privacy disaster, if it it did work for this. Random rotates beacons are a privacy issue if you don’t trust your phone mfg, which you should not, but as long as it’s an optional thing is O.K. in the way AppleGoogle are proposing.
The contact tracing is 100% Bluetooth.
You post a beacon periodically, other people post beacons, everyone is listening for that UUID and records and instances of it. This is how the whole thing works.
GPS would be a privacy disaster, if it it did work for this. Random rotates beacons are a privacy issue if you don’t trust your phone mfg, which you should not, but as long as it’s an optional thing is O.K. in the way AppleGoogle are proposing.