I have developed a card principle that enables you to hand over a deck of cards to anyone, instruct them to place the deck behind their back, and turn over one card so that it faces a different direction than the rest of the deck. Despite thinking that they have chosen a random card, you will always know which one they turned over.

In this project, I will provide an explanation of the fundamental principle. It requires minimal preparation, and with some practice, you can perform it effortlessly. Additionally, I will share various tricks and ideas, including routines such as Any Card At Any Number, an impromptu invisible deck, and a do as I do type of routine. I will also discuss different types of forces and provide tips and ideas on how you can incorporate this principle into your work.
- It requires very little preparation, that you can do on the spot in some cases
- No gimmicks
- Easy to do and very little practise
- Seemengly random process where you always know which card is turned over
- Perform anytime and anywhere
- Use this principle to create your own ideas and tricks