I know this guy.<p>Here is the direct link to his project.<p><a href="http://grathio.com/2009/11/secret-knock-detecting-door-lock.html" rel="nofollow">http://grathio.com/2009/11/secret-knock-detecting-door-lock....</a><p>This little project really exploded on him, it's been on a bunch of high profile websites in the past couple of days, knocked his server offline, etc, etc.