Video surveillance systems, aka closed circuit television (CCTV), can provide much-needed security for all types of businesses. The advent of digital video recorders (DVRs) has eliminated the constant rotation of tapes and made it easy to find the exact incidents you want.

Start your purchasing decision by analyzing what you want your camera to do — what you want it to watch and how you'll use that video. Also make sure you choose a qualified video surveillance supplier: individual CCTV components are inexpensive, but the expertise needed to correctly install a system is essential.