i really like this thing. you can prove that its a normal lock and that it will not open if pulled.
they can come up with any number(s) and try and you'll have a miracle. its very simple so you just
need to play with how you are going to manage your spec and what the "theme" for this will be. your
presentation. you'll learn to use the lock in about a min.
the cons: come come now ppl, its
a $3 modified lock that sell for almost 100. if you can get through that i recommend grabbing
this.2nd, when it has been opened it doesnt really "pop" open. i had one spec not know she had
opened it. its a very small movement so make sure you instruct them.
p.s. as a bonus to
really prove that the randomly selected numbers really are the combination you can thumb write it
onto a piece of paper through a cut out in an envelope. remove the paper from the envelope to show
them while theyre reacting to the lock being opened.