Always free AUDIOBOOKS from Twayesh Projects - download today! How Does A Security Camera Work? ✹✹✹✹✹✹✹✹✹✹✹✹✹✹✹✹✹✹✹. Basically, a camera set into position with the help of what is known as a video transmitter running to a receiver allows the view from a security camera in a specific place or aimed in a certain direction, such as in a parking lot or door entrance.