Boxed Clairvoyance by Alfonso Bartolacci Published by La Porta Magica eBook DOWNLOAD"Alfonso Bartolacci's Boxed Clairvoyance is a great principle. I tried it with a number of different style boxes and it works as explained. You will have to practice a bit to get it all natural, but once you have it down, it looks great! You need to have this tool in your arsenal." Richard Osterlind This is a Gellerish experiment, which should not be part of a regular program, but could be an extraordinary event during a show or, better, an impromptu