They can try hiding their cameras from you but they won't succeed in concealing them from this laser detector. It uses the latest technology - two pulsating lasers -- to find wired or wireless cameras concealed as far as 80 feet away. A glance through the viewfinder reveals pinhole cameras and even those hidden in objects like smoke detectors. The flashing red light lets you know when you've found something. And with it, you can be sure they won't find you.