One by one the cards are flipped over (the spectator can flip the cards over himself) and each card perfectly matches what is drawn on its back! Oh yeah, and the cards may be fully examined.
Zenner-Tech is a very direct and commercial ESP test. No extraneous props, no sticky cards and no sleights. It is perfect for a formal close-up or mentalism performance or as an encore piece when you need to perform a killer closer. The spectator makes all the decisions and yet the outcome is guaranteed, every time! If you want to add a stunning mental effect to your repertoire, then Zenner-Tech fits the bill.