Just install the app and set as your live wallpaper. For best results, set it to fast mode! Set the frames to 60fps!
An online encyclopedia describes CCTV as: Closed-circuit television is the use of video cameras to transmit a signal to a specific place, on a set of monitors. It differs from broadcast television in that the signal is not openly transmitted. The term is most often applied to surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores.
Opponents of CCTV point out the loss of privacy of the people under surveillance, and the negative impact of surveillance on civil liberties. Furthermore, they argue that CCTV displaces crime, rather than reducing it. Critics often dub CCTV as "Big Brother surveillance", a reference to George Orwell's novel Nineteen Eighty-Four, which featured a two-way telescreen in every home through which The Party would monitor the populace.