It is completely automatic and you don't even handle the cards. This gets a huge laugh. Dan Harlan's Self-Working Card Trick comes with a specially printed card box and instruction card. His special enthusiasm is reserved for sleights that are executed under cover of a natural handling of the deck. He believes, with LePaul, that simplicity is the keynote of good card magic.
Some card tricks baffle by their complexity.
Just finished reading Roger Crosthwaithe's new book, Arcadia. It's the kind of book cardmen love to read-lots of details, the kind of details that take a good trick and make it into a great one. I thought Roger's Upjog Switch to be an extremely strong utility item that will have many applications. This one move alone would be worth the price of this book. I think that anyone is any way interested in card magic will want to do the same.