Every poker room has at least a lamp. And people seldom look at it carefully for its position and the light. Thus the lamp is a safe cover to hold the scanning camera.
We produce many kinds of lamps that can be installed a mini size spy camera system inside, and those lamp camera can be used for seeing corresponding back marked playing cards and one to one marked decks. After you put luminous ink marked cards under lamp scanning camera, it will read all markings on the back of cards. Inside the poker camera, there is a signal transmitter to send the scanning image to the poker analyzer system which will analyze the barcode graphics and report the outcome to you by a tiny earpiece.