[header] How to deter thieves with a video monitoring system [title] Install cameras in conspicuous locations. [step] Potential thieves must know that they are being monitored by video cameras in order for the system to deter them. Accordingly, place your cameras in places where they will be noticed. 
Ideally, these cameras will also cover those areas that cannot be easily monitored by on-duty staff. For instance, hallways or other areas of a building that are relatively obscured are ideal locations for video cameras.