We featured a cool GPS Puzzle Box earlier this year that Markus built. It was based on a version that Mikal Hart created. Turns out there is quite a bit of interest in these GPS Puzzle Boxes, Mikal has since written a Make article which will be published in the Fall 2010 edition of the magazine. He has also been contacted by newspapers, movie directors and TV shows wanting to know more about his creation. Mikal has built many more of these boxes, so many that he decided to get a custom PCB made so that assembly is much easier. Geocaching.com met up with Mikal and made an interesting video about him, the box and the future of reverse geocaching.