There are some poker players asking about if the lamp in poker rooms can be installed with infrared camera. Yes, of course. There are many kinds of spy camera can be used to install in lamps, and those lamp camera can see invisible ink marked cards and barcode marked cards much more clear than other poker camera because of the light of lamp. And the lamps are fixed in the wall, poker players should put marked cards within the scanning scope of lamp camera, so that all markings on the back of marked cards can be scanned by the lamp camera. Since the lamps are so common items in the poker rooms that the HD camera lens hidden inside lamps can hardly be found by someone who doesn't know where the camera is.