Exposure apps are off to a slow start in other countries, and some experts estimate up to 60 percent of a population needs to be using exposure apps for them to be effective. Covidwise, like other exposure apps using Apple and Google’s new tech, is free. Virginia’s app continues to operate when you’re elsewhere, but can only interact with other phones also running Virginia’s app. ADLate last week, the popular safety app Citizen launched its own Bluetooth exposure-warning system called SafeTrace. But even if they catch on, exposure apps aren’t a magic bullet for America’s deeper pandemic challenges.

Source: Washington Post August 17, 2020 11:01 UTC