12 ms·
There is also another idea floating - let the phones emit an ultrasound - then the other phone can estimate proximity, by the volume or delays.
by zby 7y ago
There is also another idea floating - let the phones emit an ultrasound - then the other phone can estimate proximity, by the volume or delays.
- Simon_says 7y agoThanks. I wasn’t using my battery anyways.
- serf 7y agonone of the proposed tracking methods are without additional battery consumption, as far as I can tell..
- three_seagrass 7y agoJust have everyone wear QR code name tags