This is a great little illusion with a coin and a cell phone. It occurred to me that (with a little
practice) one could possible do this on a computer tablet as well.
I like the gimmicks.
They are well made [...]
What I don't like is the fact that this effect is more difficult
with a cell phone that has a protector case of some sort. It's easier with a cell phone that has no
case.
Over all it's worth performing. It has real surprise for the spectators so don't
tell them what you are going to do before you do it!