The use of CCTV camera is a detective form of security. It isn’t as effective as the preventive ones like putting up security guards in the premises to secure the area or perimeter from unauthorized entries (and exit). It only allows you to review and take action AFTER the wrong has been done.
That’s why putting up CCTV cameras alone will not ensure security of your office or building. They do require the attentiveness and skepticism on the part especially of the lobby guards.
Videos from these cameras can only be used to identify the culprit. That is, if the culprit is from the same building at all. What if he/she were a total stranger, just like in the video below.
This video was recorded from our company’s CCTV camera, which faces the office door fronting that of our neighbor’s.
CCTV cameras ensure that you have a record of any crime that happened. Certainly, they do not prevent crime from happening.