Re:The Italian Covid contact-tracing app is now developed in...
by crushthecurve on Tuesday June 02, 2020 @07:12PM
(#23397646)
If there was a mobile contact tracing app that used AGPS with accuracy down to ~1m maybe it would be useful?
Existing contact tracing apps use Bluetooth which can't be used to determine proximity with any reliability - solid objects (particularly human bodies) absorb significant signal.
Unless all protestors were holding their phones up high for unimpeded line-of-site connections then even protestors next to each other could 'appear' 20-30m away.
In most cases (especially in a protest situation) all Bluetooth-based contact tracing apps can tell you is that two devices are in Bluetooth range (so accuracy of ~30m?).
Existing contact tracing apps use Bluetooth which can't be used to determine proximity with any reliability - solid objects (particularly human bodies) absorb significant signal.
Unless all protestors were holding their phones up high for unimpeded line-of-site connections then even protestors next to each other could 'appear' 20-30m away.
In most cases (especially in a protest situation) all Bluetooth-based contact tracing apps can tell you is that two devices are in Bluetooth range (so accuracy of ~30m?).