Schneier on Ice Cream lock

Bruce Schneier writes today about a Ben and Jerry’s Pint Ice Cream lock.
Brilliant. Does anyone know of a Pepsi lock? At work we have a bit of a problem with people stealing soda out of the fridge.
ps. If anyone is going to do a fake security bulletin about how to defeat the ice cream lock dont make it look like a mi2g release. They’ll start chimping. If you haven’t read the Wendy’s drive through order vulnerability notice go read it now if you’re a security geek. (it is not finger related)