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Video features, including faces, shapes, models and colors can be observed and tracked to produce a corresponding form of control.
Video calling support has also been added to several popular instant messaging programs. Software is available to allow PC-connected cameras to watch for movement and sound, a computer e-mailed images of the burglar during the theft of the computer, enabling the owner to give police a clear picture of the burglar's face even after the computer had been stolen.
Researchers claim that this method is accurate to ±5 bpm.
Webcams may be installed at places such as childcare centres, offices, shops and private areas to monitor security and general activity.
By removing the IR filter of the webcam, IR LEDs can be used, which has the advantage of being invisible to the naked eye, removing a distraction from the user.
Track IR is a commercial version of this technology.
A webcam is a video camera that feeds or streams its image in real time to or through a computer to a computer network.