First Magic

The classical 21 cards trick is often one of the very first tricks to learn as a magician.
Deal 21 random cards to three stacks and let a person secretly select one card. The person is then asked to point at the card's stack. After pointing out the stack three times the secretly selected card is produced.

The trick is as good as it is easy and is a must-have in all magicians' acts :)

All interactions are performed by touching the cards, as in real life, making the interface very intuitive. Hence the help text is optional and can easily be switched off, allowing the magician to display the trick in full screen mode.