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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.
When sent to a remote location, the video stream may be saved, viewed or on sent there.
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.
For a more complete list see Comparison of webcam software.
Special software can use the video stream from a webcam to assist or enhance a user's control of applications and games.
Video features, including faces, shapes, models and colors can be observed and tracked to produce a corresponding form of control.
Small webcam-based PC games are available as either standalone executables or inside web browser windows using Adobe Flash.
Unauthorized access of webcams can present significant privacy issues (see "Privacy" section below).
In December 2011, Russia announced that 290,000 Webcams would be installed in 90,000 polling stations to monitor the Russian presidential election, 2012.
Other popular uses include security surveillance, computer vision, video broadcasting, and for recording social videos.
The video streams provided by webcams can be used for a number of purposes, each using appropriate software: Most modern webcams are capable of capturing arterial pulse rate by the use of a simple algorithmic trick.
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A webcam is a video camera that feeds or streams its image in real time to or through a computer to a computer network.