What's one of the best approaches to deterring illegal activity? Having your surveillance system in plain sight. When a security camera or similar audio video recording device is visible, any individual considering breaking in, vandalizing, trespassing on, or even loitering around a property will think otherwise. Dummy cameras, then, are the perfect defense item. Designed to look like authentic cameras, these devices can be placed indoors or outside and hold up to the elements. To reduce potential thefts, vandalism, or any other illegal activity around your home or building, equip your property with at least one dummy camera.