Dip Switch - (download)

A very strong and fooling billet effect using only your business cards and a pen. 

Any desired information written on a business card (or any blank card) by an audience member can be ‘divined’.

The folded business card is simply placed on the handkerchief pocket of your shirt, jacket or waistcoat to be displayed to the audience at all times.

You proceed to write your thoughts on a pad or clipboard and, when ready, openly hand the folded card from your pocket to a spectator for them to confirm that what you wrote / drew is a match.