You draw two identical sets of ESP symbols on a white board which is resting on a stand. Mark one of the ESP symbols on the upper set with a blue dot. You then cover the upper set with a piece of cardboard.
A spectator is now asked to freely select any of the ESP symbols in the lower set and to mark it with a red dot. When the cardboard cover is removed, it's seen that you and the spectator have selected the same symbol!
No forcing involved! Spectator has absolutely free choice.
This effect can be performed using numbers, letters, ESP symbols or even cards. A special living and dead test is also included in the instructions!