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Originally Posted by whitev70r
Does anyone know how the Covid app works? How does it know that you have been in contact with someone positive? Does it use Google location tracking?
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Bluetooth. App keeps a list of the anonymized tokens of other app users you come within close range via Bluetooth.
The idea was if you test positive for covid, you get an activation code to punch into the app. Other app users that you ran into previously would get alerted that they were in contact with a covid+. They'd be expected to self monitor or get tested.
Bc gov decided not to take part so app isn't that useful here.