Generally speaking, many people prefer one on one service rather than others in daily life, so as marked cards. The infrared marked cards can be seen by all the infrared contact lenses or infrared sunglasses and all the UV contact lenses and UV sunglasses can see all the UV marked cards. And some special contact lenses may see all the IR and UV marked cards. However, this one on one marked cards can only be seen by the one on one camera with special filters that no other lenses, glasses or camera can see the invisible marks. Thus it’s safe to use this one on one marked cards and others can’t detect it with normal devices.

Description

We can make the one on one camera in any shape of daily items. And these cameras can be installed in clock, wall picture, lamp or other objects. The distance between camera and IR marked cards can vary from 1 meter to 10 meters. You can see the marks very clearly on the screen if the camera is in the suitable distance from the marked cards. And the further the distance is, the more expensive it is.
For the one on one camera, most of cards can be marked perfectly that you can see pretty marks on the screen via the special camera.
We can also mark these cards according to your requirements.