Abstract: A system and method for cross-domain communications for web browsers are provided. A local computer system operated by a user executes a web browser in communication with a first domain and a second domain. A first frame in the web browser is associated with the first domain, a second frame in the web browser is associated the first domain and receives a request from the first frame for communication with the second domain, and a third frame in the web browser is associated with the second domain. The second frame receives information from the first frame to be communicated to the second domain, the second frame is associated with the second domain, and the information is transmitted to the third frame for subsequent transmission to the second domain.

Abstract: The invention provides an optical communications system having a dual mode of operation. It includes a communications module having an optically active portion with a wide-angle view; a light collimator; and a connector connecting the communications module and the light collimator to permit the module and collimator to be selectively positioned in a collimated or non-collimated position. When it is the collimated position, the communications module is positioned at the focal point of the collimator, and when in a non-collimated position the communications module is positioned away from focal point of the collimator; so that the communications system has a narrow field of view when operated in the collimated position, and has a wide field of view when operated in the non-collimated position.

Abstract: The invention provides an imaging system including a camera with an image sensor sensitive to light and a light emitter with the camera to transmit image data from the camera. It includes a controller to control the light emitter to illuminate a subject in the field of view of the camera.