Cardiograph DVD

An incredible REAL WORLD trick that makes layman shout out loud. 

• 2 cards are signed, one blank faced card and one joker. 
• Magician signs the blank card, the spectator signs the joker. 
• The spectator is asked to keep his finger on the back of the joker he signed. 
• The 2 cards magically change places. 
• But wait, your signature also travels across and is now on the card they are holding.
• Comes complete with specially printed gimmicks, extra cards and an instructional DVD.
• Easy to do, no reset.