The concept behind this is just too bold for today's audiences. I've been a performer for over 20
years and know how to manage audiences but this is kind of ridiculous. Total junk drawer purchase. I
can see it working in a theater show where you have total control of everything but otherwise it's
just too easy for the audience to work this backward. I bought it on a lark but it was an expensive
mistake. If you're looking for an audience to be able to call any number and have the lock open I've
found that Patrick Redford's Glemme is the absolute best I've found. He talks about it with a good
amount of detail in his first penguin lecture. It's 1000% better than this method and uses a normal
lock - fancy that!