Gesture-and expression-based authentication

Abstract

A user can define a gesture-based input mode with respective input value to establish an authentication protocol to unlock a computer or govern other computer behavior. As an alternative or in addition, the user can define a second input mode based on face recognition plus IR sensing satisfying a threshold to ensure a live person is being imaged for authentication, and/or face recognition plus a particular facial expression such as a smile and wink.

What is claimed is: 
     
         1 . Computer comprising:
 processor:   computer readable storage medium accessible to the processor and bearing instructions embodying logic comprising:
 permitting a user to select at least first input mode with, associated first input parameter, the first input parameter being face recognition in combination with infrared (IR) sensing, face recognition in combination with a user-defined facial expression, image of a physical gesture established by the user, or a combination thereof; and 
 executing a behavior of the computer only when at least one subsequent input of the first input parameter is received as authentication.