After users have performed a PCR or rapid test at one of the Corona test centers supported by Probatix, they receive their test result in an encrypted email. At the bottom of this email is a link that allows the results to be transferred directly to the Corona Warn app. If the test results are negative, they will then be displayed in the app for 48 hours and serve as official proof. If the test result is positive, the integration in the Corona Warn app provides the option to inform all contacts of a possible risk encounter. All individuals who have been in contact with the positive-tested person and use the Corona Warn app will immediately receive an alert about the encounter, with either an elevated or low risk and advice to perform a PCR or rapid test for safety.