The French government has released a contract tracing app, called StopCovid, to notify people when they’ve been in contact with someone who is later diagnosed with COVID-19, as reported by Bloomberg. Usage of the app is entirely voluntary in France, although the effectiveness of contact tracing depends on how many people are using it.
Buoyed by the release of the Apple-Google framework for contact tracing, many countries, including Italy and Switzerland, have released contact tracing apps in the last few weeks. But the French app has been in development since before Apple and Google released their APIs. StopCovid uses ROBERT, a contact tracing protocol developed by the Pan-European Privacy-Preserving Proximity Tracing