Too many digital contact-tracing apps in development are already dogged by security and privacy concerns. Such apps could help individuals better understand if they were exposed to someone who was infected with the virus that causes COVID-19 so they can self-isolate. Apple and Google will soon update their respective mobile operating systems to facilitate such apps, letting them use Bluetooth in the background. But there are ground rules: Such apps may not touch location data, for example, GPS. Opt-in will be mandatory, as will be letting a user opt-out whenever they choose.”]
Source: https://www.cuinfosecurity.com/blogs/digital-contact-tracing-apps-must-win-hearts-minds-p-2899