Yeah there is, they can be bump started really easily, you literally just lift the rear wheel then start moving forward, then put the wheel back down and jump on, I've seen kids do it, it takes zero skill. In the meadows these days I hear a lime alarm pretty much every day.
This is a problem that's already been solved, check out bicing in Barcelona and how that works. This really is a problem of legislation.
You just bump start them, there's nothing to break from the outside, you just lift the back wheel and start moving, then drop the wheel and it'll keep going, but with an alarm and a clacking.