Those Black Domes On Security Cameras Perform A Serious Psychological Function

Security cameras come in all shapes and sizes, but none quite as mystifying as the black dome cameras, which may have you questioning their purpose. Along with protecting the lens from dust, debris, and vandals trying to tamper with the camera, that darkened black dome serves a psychological function. Namely, making them appear more discreet and less aggressive than "bullet" cameras, as  you can't tell where the lens is pointed. 

If you've ever sat in front of a security camera that is pointed in your direction, it's easy to understand why this can make people uncomfortable. That feeling may be amplified when you're shopping or checking into a hotel, but some of these places use surveillance and security cameras to keep an eye on what's going on. 

Typically, the purpose is to deter would-be thieves and bad actors, and serve as recorded evidence if something does happen. However, to avoid making those under surveillance feel uncomfortable or watched, black dome cameras can help. That's why you generally see these installations in casinos, airports, warehouses, and other secure or public locations. Which is not to be confused with the secret traffic cameras hidden in places you'd never expect.

People behave differently if they know they're being watched. This is, in essence, the panopticon effect, a psychological phenomenon born out of the paranoia and uneasiness that you're being observed. This helps explain why businesses and high-security locations install cameras that are visible — even with black domes. Simply knowing the cameras exist might alter someone's behavior and deter bad outcomes. 

It's not an infallible security practice, as some people will steal, cheat, or carry out crimes in full view of surveillance. But the high probability of a deterrent is what business owners are often after. This is true of home security cameras, as well. Burglars are less likely to strike if they are aware of cameras. While this might be a positive in some cases, that may not make the idea of surveillance any less frightening. 

America's 'scarecrow' surveillance towers are spreading fast, and if you've ever seen them out in the wild, they can be quite intimidating. It creates a web of mass surveillance opportunities, especially for law enforcement, which has led to people across the U.S. tearing down traffic cameras and similar installations. So, while some security cameras may appear less aggressive or discreet with a black dome attached, people are still clearly aware of when they're being watched.