What a webcam is
A webcam is a video camera that captures images and feeds them in real time to a computer or across a network. The name is a combination of 'web' and 'camera,' reflecting its common use for sending live video over the internet. Webcams can be built into devices like laptops and monitors, or connected as separate accessories. Their core purpose is to provide live video from the user's side of the screen.
How a webcam works
A webcam captures light through a lens and converts it into a digital video signal using an image sensor. This signal is sent to the connected computer, which can display it, record it, or transmit it over a network. The process happens continuously, producing a live stream of images. Software on the computer handles what to do with the video, whether showing it in a call or saving it to a file.
Built-in versus external webcams
Many laptops, tablets, and monitors come with a webcam built in, offering convenience without extra hardware. External webcams connect to a computer separately, typically through a cable, and often offer better image quality or features than built-in options. Both types work the same way at a basic level, capturing live video; the choice between them usually comes down to convenience versus quality and flexibility.
What webcams are used for
Webcams are most associated with video calls and conferencing, which let people see each other in real time across distances. They are also widely used for live streaming, recording video, and online broadcasts. Beyond communication, webcams can serve roles such as monitoring and capturing images for various applications. Their ability to provide live video has made them a common and useful part of modern computing.
Webcams and privacy
Because a webcam captures live video of its surroundings, privacy is an important consideration. Many devices include an indicator light that shows when the camera is active, and some users cover their webcams when not in use for added peace of mind. Being aware of when a webcam is on and controlling which applications can access it are sensible steps for protecting privacy while still enjoying the camera's benefits.
Why it matters
The webcam became an everyday tool for connecting with others and sharing video, especially as remote work and online communication grew. Understanding what a webcam is - a camera that feeds live video to a computer or network - clarifies how video calls and streaming work. For anyone who uses a computer to connect with others, the webcam is a familiar and important device.
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See also: What is a touchscreen? Explained, PC parts explained: what each component does.
Sources
Published date reflects the original event date (2023-04-04). This article is original Skillo editorial written from the sources above; facts were verified in September 2026.
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