Originally Posted by
SalesServiceGuy
.. most people carry their cellphones wherever they go. The app, via Bluetooth, constantly pings those other cellphones around it. Via geo-tracking, the app can determine if you have been in close proximity to a person or group of people who are at risk of infection.
... maybe you are talking about some other form of technology. The one used in Canada works quite well. The app does not tell you if you have COVID-19 only that you have come in close proximity to someone that has. If the app warns you, it is your civic duty to get a COVID-19 test.
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