>>~First a convenience, then a requirement.
It is starting at this stage as a convenient option [0][1]. The stage to be concerned about is when it becomes ubiquitious, then default, then mandatory. Might not be soon, but it is a large round rock rolling downhill. Might be stoppable, but that's usually the default progression.
[0] https://en.wikipedia.org/wiki/Mobile_driver%27s_license [1] https://www.cnet.com/news/your-future-drivers-license-could-...
That said, another part of it was clearly in the future tense. >>At that point, we'll need two devices.
So, thanks for the alert, I'll try to be more clear next time.
My main concern was the assertions made in the comment I initially responded to, several layers up. Whose author seems to have ghosted us, since making them.
Certain new models, maybe. Certain rental cars, maybe. But in the general case?
And where in the world is one required to run an app to use public transportation?
I just don't find this factual distortion from "could happen, might happen" to "is in the process of happening right now" to be very helpful.