Spy Covert Cams are everyday objects containing covert cameras. Alarm Clocks, Pens, Glasses, Light Bulbs, Phone Chargers and more. Zetronix carries two types of spy cameras DVR and WIFI. DVR cameras record video to a memory card for playback on a computer. WIFI Cameras send live video via your WIFI Network though the internet to display live video on your phone or tablet. Most WIFI cameras also have a DVR as well. Our reliable Spy Cams are currently being used by Police/SWAT, FBI and other Government Agencies.