BOLT Locks - Locks code themselves to first key used
http://www.boltlock.com/
http://www.boltlock.com/how-it-works
A product line of utility locks (padlock, cable lock, trailer hitch lock, truck bed toolbox lock) that have an automotive style wafer cylinder that will code themselves to whatever key is first used in them.
Judging by the 'How it Works' video, seems similar to what Kwikset SmartKey is doing.