1. A system for optical authentication and authorization of a user for mobile devices, the system comprising: a login display on a mobile device displaying a visual pattern; a data collection engine whereby a plurality of different selection attributes comprising exchange, intensity, and globularity obtained from a plurality of user selection events occurring to said mobile selection device with reference to said visual pattern during a single authentication cycle, said selection attributes comprise measured selection attributes and derived selection attributes calculated from said measured selection attributes; an authentication engine whereby selection attributes from said plurality of selection attributes are compared to projected user selection attributes derived from user selection attribute values obtained during prior successful logins.