Any contact tracing will produce false positives and false negatives. You will notify 20-50 people per infected person, most of them will not be infected. We on

Any contact tracing will produce false positives and false negatives. You will notify 20-50 people per infected person, most of them will not be infected. We only have a problem if the number of false positives is in the 200+ range and the rate of infections is relatively high. It is important to not that a short encounter will not put you into an at risk status. You need 15 minutes or whatever the health authority is long enough to make the tradeof between false negatives and false positives. If people follow the app or not will be mostly legal protection. Countries with weak worker protection will have a harder time getting people to comply voluntarily. I find slippery slope arguments weak. They can be used on anything to make the outcome much worse.