Does a wireless system exist?

Wireless cameras do exist, however their application is more limited than the standard wired solutions. Recording can be performed directly on the camera (through an SD card) or on a PC. A Wi-Fi connection is necessary for these cameras to work properly. However, it is important to keep in mind that wireless video streaming is not entirely secure. In general, a wired solution can be applied in most locations, however, wireless cameras are also readily available and are an option that can be considered.