Video surveillance letters

CCTV

["Think of the abbreviation often seen on security cameras in public places, short for a system that records visual activity."]

The clue "Video surveillance letters" is a straightforward definition hinting at the abbreviation for a common security system. "CCTV" stands for Closed-Circuit Television, which is widely used for monitoring public and private spaces. The word "letters" signals that the answer is an acronym rather than a full phrase. It’s a direct reference with no hidden wordplay—just the initials of the technology itself.