Lockitron: $500k of Reservations in One Day blog.lockitron.com

Looks like nobody likes keys and would like an easier way to enter their home. This is going to be huge.

As an aside, I think the modern smartphone is one of the biggest business opportunities in history. It’s the thing we take everywhere, so everything—from payments to door locks and even cars—is being redesigned to work with this rectangle in your pocket.