Luminous IR Marked Cards For Only IR Camera To Read
For the IR marked cards for IR camera to read, it's in fact not the camera to show us the marked cards but a monitor who receives signal from the IR camera. You must know the monitor with surveillance cameras. We can see on the screen everything happening within the monitor scope of the camera. Usually there are such cameras in the bank, police station, train station and so on.
This IR marked cards is very special and no contact lenses can see the invisible ink marks. It's for the special camera only. Only the camera reads the IR marked cards in its reading scope and sends the marked decks signals to the monitor, can we see these marked cards on the monitor with clear marks of suits and numbers.