Unfortunately in modern life style is impossible to "survive" in any city without a smart phone. In contrast, with a smaller place like a town or a village where things arent so complicated! I try more and more not to rely on my phone for simple things, as how to found one street. I still prefer to stop and ask as many people needed to find it.
But the future is digital, and sooner or later the digital IDs will come up! All these qr code scan to get gas or to access to a place, service or information, is just a way to train us!
Nice thoughts in any case!