The most important recommendations of the CNIL were implemented – for example, the corona-warn app uses anonymized data, does not create a list of people and is voluntary. The app is supposed to use bluetooth signals to detect which smartphones have come close to each other – and warn users if it later turns out they were next to infected people.
There have been repeated data protection concerns about the app in france – also from the camp of france’s president emmanuel macron. "The CNIL believes that the app can be used legally (…) and that it allows a faster alert in case of contact with an infected person, including unknown contacts," the agency said. Parliament to debate the project on wednesday.