The performer puts a small envelope on the table and introduces a set of ten colored crayon markers. These are in the package just as they were when originally purchased. The package is clear and they can see ten different markers. You ask the spectator to remove a crayon marker, let’s say green for instance. A deck of cards is introduced, and with their own hands remove two cards.
They write the name of either card on a blank card with the chosen marker. There is no magician’s choice here, they can write down the name of either card. Let’s say they write down the Four of Hearts with a green crayon marker…
Pick up the envelope and dump out a business card from inside. On that business card in green writing is the name of the card that person wrote! The envelope is empty otherwise. Not only have you correctly predicted the card chosen in their hands of the remaining two, you’ve also predicted the color they chose. You’ve made a twin prediction and both came true! A very clever technique is used to force a color.
You can do several different effects with Twin Identity.