SYSTEM TO STRENGTHEN UNIQUENESS OF SELFIE FOR EXPRESSION-BASED AUTHENTICATION

In accordance with the teachings of the present disclosure, devices and methods of setting a selfie for expression-based authentication that strengthens the uniqueness of the selfie are provided. The method includes prompting a user to submit a non-standard selfie to be used for authentication, wherein the non-standard selfie comprises a facial expression of the user that the user does not typically make in a photo. After receiving the non-standard selfie, the method includes determining whether an expression in the non-standard selfie meets a pre-defined required degree of uniqueness. In response to determining that the expression in the non-standard selfie meets the required degree of uniqueness, the non-standard selfie is set as an authentication password.