Hacker cracks 4 million hotel locks w/ Dry Eraser

[HallisChalmers]

http://www.dailymail.co.uk/news/article-2213849/Matthew-Jakubowski-Hacker-cracks-4-million-hotel-locks-James-Bond-Dry-Erase-Marker.html

[clearmoon247]

I have one built, but am working on making it fit into a sharpie/expo marker. The arduino nano is just slightly too large so i many be stuck with getting the basic atmega328 that i can flash with the code to make this work. Shouldn't be too difficult