Webcams are typically small, low-resolution cameras connected to your computer typically via a USB port. The camera can act in two modes: streaming (for a series of images of a moving object) and grabbing (for a single still image). The most common uses for webcams include videoconferencing and web voyeurism. The latter is not as lurid as it might sound, although some webcam sites are notorious for their pornographic content. Webcams can be used to send almost-live images to an online correspondent; many people include screen grabs of themselves at their computer workstations just because they can.
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