Yes, it is important, if you want to remove the idea that the trick is done with duplicate cards. Some tricks that is the first thought and by proving that is not the case the magic is greatly strengthened.
Answered at 12:51pm on December 19th, 2013 by kgphoto (3 karma)
The purpose of the signature is to prove that playing card is examinated and the only 1 in the world.Depend what card trick you want to perform.ITs vary.
Answered at 08:34am on November 9th, 2013 by xdoyaha (3 karma)
It's not important but it can help make a trick stronger if the card is being destroyed and put back together. People are smarter than you think sometimes.
Answered at 03:42pm on October 31st, 2013 by robertsonmagic (45 karma)
I can be, If the card is doing something impossible. Like ambitious card, appearing inside your wallet, being torn & restored...etc.
You want to have the card signed just so they don't think it is a double.
Answered at 12:43pm on October 29th, 2013 by s_branham (160 karma)