To turn a short-sleeve shirt without buttons into a poker scanner for edge marked cards, we usually install the poker camera in the shirtfront, the part of the shirt that covers your chest. In spite of the poker camera, there is nothing special in appearance about the short-sleeve shirt. The poker camera is totally concealable and pretty difficult to be discovered by other people. You nee to keep the poker camera 40 to 60cm from the edge marked cards so that it can scan the cards’ invisible barcodes quickly and accurately. For your information, if you prefer to customize the scanning distance according to your own needs, we can satisfy your demand as well. If you are interested in our shirtfront poker scanner, welcome to send us your email or visit our website.