Webcam was
introduced in 1991 in Cambridge University Computer Science Department and was
known as Coffee Cam. Science this camera could be used over the Internet or
web; it was based on the fact that they are low in cost and are portable and
the cheapest way for video calling. Today webcams are widely used for video
calling, video conference and surveillance. It also help people who are hard of
hearing in communicating through sign languages. Apart from these features
webcam can be use for gesture control.