Contact tracing apps (especially those that respect privacy) are just one tool, even given the limitation that a Bluetooth LE ping by itself does not prove a pe

Contact tracing apps (especially those that respect privacy) are just one tool, even given the limitation that a Bluetooth LE ping by itself does not prove a person to person contact. I will be interested to see if they ultimately are of any benefit. Perhaps not, but we don't have effective testing, treatment or a vaccine yet.