There are different types of data stored and transmitted from the Safer Badgers app.
- Personal identifiers, such as NetID, are used to create user accounts on the Safer Badgers App. This personal information is shared with UW–Madison’s Division of Information Technology (DoIT) and stored on users’ phones as well as on account servers.
- COVID-19 test results where users retrieve those results through the Safer Badgers app are stored on their phones.
- Anonymous Bluetooth tokens are used as proximity records in the Exposure Notification feature. These tokens are stored on the phone for 14 days and then automatically deleted. When a user has a positive COVID-19 test result (and if they have opted-in to the Exposure Notification feature), 14 days’ worth of their Bluetooth tokens are uploaded to a secure database server and then downloaded by the other phones using the Safer Badgers app. Each app then checks for matches against the token history saved on their phone. The tokens expire and are deleted automatically after 14 days, both from the phones and from the database server. The tokens are not saved anywhere else. Note that these randomly generated tokens are de-identified and are not associated with a particular phone or individual. The Safer Badgers app does not access, track, or use GPS location information for any purpose.