NIH Digital Health Solutions for COVID-19: Clear2Go - A Digital Identity Wallet for Health Status

Clear2Go was a solution/app that provided digital, non-refutable cryptographic proof of testing or vaccination that was used to evaluate risk of allowing individuals to return to normal work, travel, and public life activities. It was a mobile service that mapped a person's vetted identity and biometrics to the phone and then cryptographically binded it with their COVID-19 test and vaccination records. The person then proved their status by utilizing the credentials with a QR code or NFC tap.