I'm in Guangzhou China at the moment and was very intrigued at these ride sharing bicycles and how they worked so I gave one a try today.
Basically these bikes must have a data sim and GPS built into each bike (Correct me if I'm wrong, I'm not entirely sure myself), and to unlock it you just have to scan the QR code on your phone and providing you have enough credit it automatically unlocks the bike.
I was thinking if New Zealand would eventually have something like this. It would be pretty convenient but I don't know if the idea of littering our streets with orange, yellow bikes seem like a good idea. I can understand China having them as their streets are already pretty messy. In fact I think the littering of orange bikes make the city less messy to be honest!