For example, the position of a single light source can be tracked and used to emulate a mouse pointer, a head-mounted light would enable hands-free computing and would greatly improve computer accessibility.This can be applied to games, providing additional control, improved interactivity and immersiveness.When approached by law enforcement, he aimed the gun at the police officer, who in turn fired back, striking him.Cruise companies have stepped up their offerings to widen appeal to a younger demographic.One such function has the webcam act as a "magic mirror" to allow an online shopper to view a virtual item on themselves.The Webcam Social Shopper is one example of software that utilizes the webcam in this manner.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.
Webcams can be used to take video clips and still pictures.
The most popular use of webcams is the establishment of video links, permitting computers to act as videophones or videoconference stations.
Other popular uses include security surveillance, computer vision, video broadcasting, and for recording social videos.
Unlike an IP camera (which connects using Ethernet or Wi-Fi), a webcam is generally connected by a USB cable, or similar cable, or built into computer hardware, such as laptops.
The term "webcam" (a clipped compound) may also be used in its original sense of a video camera connected to the Web continuously for an indefinite time, rather than for a particular session, generally supplying a view for anyone who visits its web page over the Internet.