Abstract: A camera detector device for detecting the presence of an illegal camera inside a room. A camera takes multiple pictures of a room and identifies reflections in each still image. If a reflection with similar properties appears repeatedly overtime than the reflection is identified as an illegal camera positioned towards the camera detector device.

Abstract: A camera detector device for detecting the presence of an illegal camera inside a room. A camera takes multiple pictures of a room and identifies reflections in each still image. If a reflection with similar properties appears repeatedly overtime than the reflection is identified as an illegal camera positioned towards the camera detector device.

Abstract: A security system and method for detecting the presence of one or more persons in a location, by: directing a light source in the direction of the location; detecting reflections of the light source from the location by a light detector in order to form an image representing the one or more persons' eyes; and analyzing the image received on the light detector to identify and count the number of eyes on the image. Preferably, the analyzed information is then communicated to a remote facility for further processing. Appropriate action to take based on the analyzed information includes issuing an alert, turning on an alarm system, sending a message to one or more predetermined persons and/or machines.

Abstract: A presence detector for detecting and estimating an audience watching television comprising: one or more presence sensors adapted to capturing signals emitted by or reflected from the audience; and a translator connected to the one or more presence sensors adapted to translating output signals created by the one or more presence sensors to data signals representing the estimated number of people in the audience. Presence information captured is converted to television rating data and is very useful for pricing advertisements accurately.

Abstract: Systems and methods for measuring an audience by: directing a light source in the direction of the audience; detecting reflections of the light source from the audience by a light detector in order to form an image representing the audience eyes; and analyzing the image received on the light detector to identify and count the number of eyes on the image. Preferably, the analyzed information is communicated to a remote facility. The light source can be in the visible spectrum, infrared (IR) spectrum or even ultraviolet (UV) spectrum. The reflected light from the retina or cornea is then captured by a light detector.