« Reply #27 on: 30 July 2012, 20:46 »
The Rio one was very obvious with the bouncer...can anyone explain the trick with the father and son where they pick a card at random from two packs of cards and they were the same? Both decks were shuffled, cards were all different...dynamo didn't touch them....
The easiest way I can think that was done was with two special decks of cards. I used to have some years ago, but I can't remember what they are called...anyway, they work by every card has the same one card (for e.g. 9 of spades) that is cleverly magnetised to the back. So no matter if you fan them out or flick through them the card you will choose is the same card.

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