This is Schuyler Towne, who is a " a mechanical security researcher" aka "competitive lockpicker". Consequently he is very interested in the construction of locks and making them more secure. There is some extreme geekery here, meaning education, and it is great. Or maybe you want to know how a master key works? Bam, video below. Fascinating stuff. He has a blog looking at vintage safes and locks that is really worth looking at too.
I wish I knew about him when we closed our front door with keys inside last month... His workshops would make a good corporate event I bet. He is pretty high energy generally (videos above are more mellow). I believe he may be speaking at the upcoming TEDxSomerville talks in Somerville, MA. Will keep an eye out.
