"Arlen Holder" wrote in message
...

Assume you have 100% app uptake in the entire world...
o What exactly do those apps tell all the people exposed to...

a. infectious aerosols from people having left the room long ago
b. contaminated surfaces from people who left the room long ago
c. droplet contact with asymptomatic carriers of the disease

I already answered this mindless silly **** more than once.