1. An information processing apparatus, comprising: a biometric information authentication unit configured to authenticate biometric information identified from each of a plurality of captured images of an eye of a user of different sight line directions, based on reference images of the eye of the user of a respective sight line directions; an authentication result combining unit configured to combine authentication results by the biometric information authentication unit; a sight line movement pattern identification unit configured to identify a movement pattern of a sight line of the user based on the plurality of captured images of the eye.