A method of inputting an action to a computer device using a fingerprint recognition sensor placed on a thumb of a user. The method including: setting a plurality of actions corresponding to fingerprint data from a user's fingerprint patterns; storing the plurality of actions corresponding to the fingerprint data in the computer device; reading fingerprint data by the fingerprint recognition sensor corresponding to the user's fingerprint patterns from a first finger placed in contact with the fingerprint recognition sensor; comparing the fingerprint pattern from the first finger with the user's fingerprint data stored in the computer device; and responsive to a match between the fingerprint pattern from the first finger and the user's fingerprint data stored in the computer device, initiating the action stored in the computer device corresponding to the first finger placed in contact with the fingerprint recognition sensor.