I only bought this trick because it is only $1 and after watching the video I can say that:
1. It looks great
2. If there are any magicians out there that use technology as a form
of magic, like JC Sum's "iFrame" or Hara from AGT, this would be great to add into your street/close
up repertoire
3. Since it is only a dollar, I recommend getting it! in case you ever decide
to get an iphone
4. Timing is pretty much everything with this effect and some practice to
perfect the "movements".
Despite of his way of teaching, I think the creator breaks down
everything pretty good, if not to the "T", you can get the basic idea and create your own way of
presenting this effect. I have not performed this trick (mainly because I do not have an iphone) but
it does look good and I cannot wait to get my hands on an iphone and mess with this effect more ;)