The Polygraph of Twin Truths by Biagio Fasano (B. Magic)

“The Polygraph of Twin Truths”
is an amazing self-working effect revealing a pair of cards chosen by two spectators, made possible thanks to a special arrangement of the deck: a variation, unknown to most, of one of the most famous mathematical stacks…

After learning a practical method for easily sequencing the deck according to this secret stack, starting with a factory new deck, here you will find an explanation of the effect, Automatic and themed “Truth Machine,” which can involve two spectators.
Each of them will choose a card from the deck and, despite their possible reluctance to tell the truth about their card, it will be the deck itself that, when “questioned about it,” will reveal the specifics of each card (Color, Suit, and Value), even showing the Twin of both cards!
The best part for the magician? The deck of cards will do practically all the work by itself!

Strengths:

⦁ Although it may not appear so, the effect is incredibly automatic (SELF-WORKING)
⦁ The magician does not have to perform any card manipulation techniques, except for an optional ‘Riffle Force’ that follows the first choice, which is completely free.
⦁ The secret stack remains unaffected and can be easily restored in its entirety at the end.