If there is normal playing cards in front of you, do you can do some magic on it?
There is a wonderful poker cheat device which can handle the normal playing cards without any juice ink mark. You can just prepare the playing cards which you may need, and put it into the device, when you need the cards, it can give you the cards automatically. It is kind of magic.
You may want to know what is products, that is the iPhone smart phone, which can also mark the phone call, it is good hidden place, cause no one would think that the iphone is a poker tricks device, which can hidde the playing cards. And it can change the cards itself.