Everyone can see everything, not only those people that write the information. It seems that there is no way the numbers can be switched. Besides the Add a Number effect, Guy BavIi gives you his personal routines for using the Erasable Mind Board , to predict a picture drawn by several members of the audience. This item is for the professional performer. The board looks like an every day erasable board.
Every board has a built in space for a marker pen and erase sponge for easy use.
The board will easily fit into any normal brief case for easy carrying. Spectators can hold the board and will never suspect any special mechanics. The special design will give you many years of use. Audiences tested by Guy BavIi in his shows. The Erasable Mind Board comes complete with a bag, instructions and routines.