Web Cams are usually used to catch secret footage that is later posted all over the internet. As you can see, on the internet you watch so many videos with that involve someone alone. How do people film and get the person caught on camera? Web Cam. Webcams are also used to see whoever is at your door or simply if anyone is trying to break into your home. For example, there is the ring. The ring is the product that is used to see if your home is in danger or not. It's a webcam that is installed all through your house. This is a short little essay to tell you about webcams. Hopefully, I help and you get a great grade! :)