Clip board A4 size
The clip board is a secret device to give you access to anything written or drawn by a spectator. You can have one or more spectators write a few words, numbers or draw a design, which is then folded and retained by them for later verification. You apparently read their minds, and reveal or reproduce this which is verified with their original. A full A4 or letter size model measuring approximately 8" x 11.5".