Webcam

What is a webcam?
A webcam is a video capture device connected to a computer or computer network, often using a USB port or, if connected to a network, ethernet or Wi-Fi.
The term “webcam” may also be used in its original sense of a video camera connected to Web continuously for an indefinite time.

Different lenses are available, the most common in consumer-grade webcams being a plastic lens that can be screwed in and out to set the camera’s focus.

Webcams are used for inexpensive, real-time video chat and webcasting, in both amateur and professional pursuits.