They "lock" automatically, and beep when you try to move them. They're also GPS tagged. I imagine the theory is that the parts aren't worth enough to really be

They "lock" automatically, and beep when you try to move them. They're also GPS tagged. I imagine the theory is that the parts aren't worth enough to really be stolen (and unless you modify them, they can't be used without the app). And of course, theft is worked into their business model.