I'd be interested in how the devices talk to their servers, and if they have control to unlock the devices. It would be smart to have public / private keypairs

I'd be interested in how the devices talk to their servers, and if they have control to unlock the devices. It would be smart to have public / private keypairs for each device capable of unlocking, so that even they could potentially not be allowed to unlock it. I want to see if this service gets hacked and someone issues a mass-unlock signal.