Incredible how just in a few years, the smartphone went from
"a device that's nice to have and allows you to contact people, access your calendar, play games and look up bus schedules on the go"
to
"a device you're absolutely required to own and have access to at all times because if you don't, you don't get a bank account, health insurance, public transit, or basically any online service required for enrollment in a school or an employment contract"
@schratze there's a 70s SF novel called Gravitor (Hugh Darrington) that, among other things, is about how all of society has to wear a wristband (much like a smartwatch) that's connected to their bank account, and all public amenities (houses, phones, internet terminals) require a symbolic payment of 1 credit, and the protagonist has his forcibly taken from him, which permanently exiles him from society.
Seems a little more real every day.