US Patent 10891616 System and method for effort-based user authentication

A method of authenticating a user of a user device, the method includes receiving a user effort-based identity authentication token from a user device, generating a challenge request, receiving an effort validation response, generated by an effort validation server in response to a user performed requested effort, receiving the effort-based identity authentication token, and authenticating the user as a function of the received validation response and the user effort-based identity authentication token.