US Patent 9117066 Camera-based portal content security

The disclosure generally describes computer-implemented methods, software, and systems for providing a camera-based portal content security mechanism for client devices. One computer-implemented method includes receiving a request for portal content from a client device, determining that the requested portal content requires a camera security operation, notifying the client device that a camera image is needed as a prerequisite to display at least part of the requested portal content, receiving the camera image from the client device, and analyzing, by operation of a computer, the received camera image for more than one viewer.