US Patent 10963545 Authentication via typing cadence, gestures, and QR codes

Disclosed herein are techniques for authenticating a user via gestures, QR codes, and passphrases generated to incorporate typing habits of the user. A passphrase system generates a one-time use passphrase, which incorporates hallmarks and/or quirks of the user's typing, and presents the generated passphrase as an authentication challenge to authenticate as the user. If metrics collected during the authentication challenge are statistically similar to metrics of the user's typing, the authentication succeeds; otherwise, the authentication fails. A user's gesture habits during input of an authentication drawing may be used as a target for future authentication attempts. A user's input motions (typing and/or gestures) may be converted into a secure QR code; a different host device may use the secure QR code to obtain the target metrics for future authentication attempts of the user.