One of the most important requirements for Internet cameras is their ability to ensure a high level of security. The ability of such video streams to be transported over public, unprotected networks makes encryption critical in ensuring that only authorized viewers are allowed to see the images or control the camera.
Until recently, all security cameras were wired with coaxial cables carrying analog video signals in NTSC or PAL format. Each camera required the installation of an independent coaxial cable back to a security/monitoring station on premise.