Only 12 cards are used and any one is selected and noted.
The cards are shuffled cut then the zig zag shuffle separates half the cards into a pile.
The top card of the pile tells if it is a spot card or a court card.
The second Zig Zag shuffle cuts the remaining cards in half and the top card of the seperated pile indicates a red or black card.
A third Zig Zag shuffle seperates the remaining cards and the top card of the pile indicates the suit.
One card has been separated entirely from the cards through the Zifg Zag process and it is always the selected card.