One pretty understandable reason for a transportation device to update itself is for new GPS ephemeris data. I think it would be cool if there was a device prot

One pretty understandable reason for a transportation device to update itself is for new GPS ephemeris data. I think it would be cool if there was a device protocol that somehow securely promulgated such data from devices that are expected to be well-connected, like your smartphone, to "things" that are not, like watches and cameras and scooters.