This sound comes from the camera monitor mechanic in the original Five Nights at Freddy's, the 2014 horror game that made security-camera gameplay iconic. The brief flip noise became familiar through lets plays, fan games, animations, and camera simulator videos inspired by the series. It still gets used because a single tap of the effect instantly signals surveillance, panic, and checking for danger. Even outside FNaF content, creators use it as a shorthand for switching to a monitored view or catching movement at the worst moment.