A method and system for the identification of a user is provided by collecting a series of user enrollment data from a series of user inputs; calculating a user profile from the series of user enrollment data and additional user data, the additional user data being randomly selected user enrollment data from the series of user enrollment data; comparing a post-training user login to the user profile; updating the user profile with data from the post training user login if the post-training login is consistent with the user profile; repeating the comparing and the updating for each successive post training user login.