Echo Book Test by Vincent Hedan (Astrology) Mark Mason a clever gimmick and it's

a clever gimmick and it's easy to perform

He gives it to a spectator and is asked to deal them face up

Multiple routines

To prevent wear

This technique works and Devin give case histories in the book showing how websites using this are on the first page with photographic proof

Echo Book Test by Vincent Hedan (Astrology) Mark Mason a clever gimmick and it'sThe Echo Book Test is a project I kept secret for the last few years I use Echo when I want a personal impact; when I want an easy, foolproof book test; and when I want to involve the audience emotionally. But Echo is much more than a simple book test First of all, Echo is a normal book: anyone can read it without suspecting anything, in fact it's available on Amazon. In secret, Echo uses a classic principle by Larry Becker (which he allowed me to use