Sorry, I really wanted this to work, but it just didn't. It sounded great to have something on my key chain always ready to go. However, there's a couple of issues I have with it.

The effect

When I performed this for people that have seen me before they commented that it was "nice" and "cool," never "amazing." It's interesting that the dvd performance clip (for one person in a living room) had the same reactions. When I ask my friend what he thought honestly he said that it was ok, but that it felt small. The restoration happens in a very small space, and the fact that it is plastic and something that is normally given away made it feel cheap. Lastly, when I did the rest of the effects he was less impressed, since he got a sense that this was "something I had bought"

The "Self-Contained-ness"
It is not. Harlan in the video says: "The 'other little thing' stores nicely with this." My understanding of this phrase was that it was all self-contained and ready to go. However, he speaks of storage as when it is in your drawer, not when it is in your pocket. The handling as described in the video doesn't allow for this to be self-contained. You have to have a piece on a pocket different from where your keys are.

Quick wear and tear of Detached Gimmick
When I detached the gimmick several times from the key chain I realized that the plastic got damaged, and when the restoration happens something seems wrong about the plastic also becoming too neat. (this might be my own imagination of how things should be).

The Back:
It really isn't something freeing. It is rather constraining.

The number tricks are not strong. Most magicians would know this. They require too much handling of numbers.

The Triangle in Circle force. I think it plays much better when the performer draws it rather than trying to show you were attempting to "send" the printed design of a fob. Having the revelation on a company's tag somehow cheapens the effect in my mind.

The website. The Denmark Elephant is done well. There are two creative things if you have cards: A) doing the force with a Card rather than number, B) a kicker that displays your skill with cards.
Having said so, if I will have cards on me I can think of about 100 things that would be much stronger than what is presented here.

Final Veredict:

It is not strong magic, even if it seems like a great idea on paper. The strongest thing you can do is the regular restoration, and there are slight problems of practicality and wear and tear with the gimmick. All in all, not for people who have been in magic for a while. It might be nice for someone starting, if you don't have other stronger material, or if you're unaware of the forces in the back simply by reading the titles. Since it could be used by some I didn't give the trick less stars.

this is the ultimate and I carry it all the time...fast easy and is a blast to do. What do you always have on you at least 95% of the time if not more? .. your keys.. when I get asked what I do and mention that I do magic the reply to that is "do something" with this I am ALWAYS ready to do something and I get great reactions from it as well.

In line with the previous review, I can understand why the reactions don't play so big, even though the handling is very similar to Greg Wilson's Florida Keys (available on his "On the Spot" DVD). The latter trick has a better presentation, because it's more interactive with the audience and has a flashy ending.