Now, by pointing to the piles have them put the deck back together in a different order.

The trick is that as you are pointing at the card piles, instructing the audience member to put them back together, you take a pinch of salt and drop it on top of the chosen card as you point to it)
With nothing more than kicking a deck of cards you can tell which is the chosen card.

Materials Needed:

1 Standard Card Deck

A good pinch of salt secretly stored in your pocket

Method

Have a shuffled deck of cards placed on the floor. Have a person look through the deck and choose a card. Have him/her place his card on top of the deck. Now have them cut the deck into five piles. (Remember that their chosen card is on the top of the first pile.)

Now, by pointing to the piles have them put the deck back together in a different order.

The trick is that as you are pointing at the card piles, instructing the audience member to put them back together, you take a pinch of salt and drop it on top of the chosen card as you point to it)

Then, lightly kick the deck of cards with your right foot, slide into the cards to make them glide to the left.

Examine the deck. The place in the deck with the most distance between one card and the next is the chosen card.

Notes: Practice this trick before performing to get a feel for how hard to kick the cards, and how to "see" the chosen card.