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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.

Unauthorized access of webcams can present significant privacy issues (see "Privacy" section below).