The amazing feature of this trick is it can be performed anywhere without any fancy setup. And it fools everyone. Start to deal playing cards onto a table. Ask the spectator to stop you whenever. This truly proves the card they stopped at was their free choice. You place a notepad on top of the card pile. They open it to find a prediction you wrote beforehand. When they flip over the card they stopped at, they will be surprised to see it matches the exact card from your written prediction.