Digital Video Recorder (DVR)

While a CCTV surveillance system can't always stop an attack, it can be a deterrent and it can provide valuable evidence that helps to identify the perpetrator, or to give the police a better idea about what took place. The knowledge that a CCTV system could make a would-be burglar change his or her mind or capture their face on tape if they decide to go ahead is the reason that many people invest in CCTV systems.