Definitive Double Signed Torn Restored Card

A deck of card is ribbon-spread on the table. A spectator selects any card from the spread. She signs her nameacross the face. The magi signs his name across the back. The magi’s hands are absolutely empty when he foldsthe card back and forth to weaken the cardboard. The card is then torn into four pieces; each piece shown separately.With just a squeeze， all of the pieces magically become restored.