Patent ID: 8305188
Filing Date: 2012-11-06
Classification: G06K,H04N

Abstract:
1. A system for maintaining login state information, the system comprising: a memory configured to store the login state information; a camera configured to capture an image; and a processor configured to: determine, based at least in part on the image data, a location of a central object associated with the user; determine, based at least in part on the image data, a location of a first satellite object associated with the central object; modify, based at least in part on the relative location of the satellite object with respect to the location of the central object, the login state information to indicate that the user has logged in; store a hot zone for the user, wherein the hot zone is a portion of the field of view of the camera and the portion is a predefined size and shape centered on the location of the central object; at a later time, detect a logout gesture within the hot zone, by determining the locations of the central object and the first satellite object; modify the login state information to indicate that the user has logged out when the logout gesture within the hot zone matches a logout gesture stored for the user, but only if the central object and first satellite object are located in the hot zone.