After these earliest inventions, various types of security cameras and security devices have been developed invented and currently commercially available with the development of smart security technology. Examples of the most popular types of security cameras are dome cameras, bullet cameras, C-mount cameras, day/night security cameras, infrared/night vision security cameras, varifocal cameras, and wireless cameras. Although security cameras work best to provide security, there are also some limitations. In some cases, such limitations outweigh the benefits.