Cash is positioned as suspicious. In 10 years, it might very well be illegal.
Kicking banks off the internet/apps would make Android and Apple less cushy.
Here's my attempt at future history: Firstly they'll require you to prove your current location, to ensure that the request isn't made by a remote hacker; they'll do this by integrating their own cellular modem, as well as scanning local wi-fi networks. Then, at a second phase, they'll integrate a camera and microphone to perform a face identification, asking you to speak out a particular phrase while performing a particular motion. At the start they'll only require you to turn the mic and camera on during active usage, but eventually they'll say that these have to stay on continuously so that they can ensure that the device wasn't tempered with. And if we aren't careful, we'll accept every single small added requirement, until we're boiled alive.
It's not relinquishing control, but separation of concerns for hardware.
Bank should manage their hardware, not your hardware.
> the banks/governments give the people devices to use for these things,
Give?The devices will cost "a reasonable amount" and have GPS tracking "for your safety".
Okay, I guess more to the point, I don't want the banking app forcing the OS that I use. They can provide their own damn hardware!
However, if it sits at home in a drawer, it can keep its camera on all it likes, transmitting images of darkness, and tell the bank repeatedly where your home address is, and sometimes (when in use) confirm what your face looks like. Not a privacy issue I think?
Probably it would become expected that you carry the thing around and it replaces cash and cards, but that seems to me to be the crucial step if it's going to have meaningful potential for spying.
Those devices have no network, no connectity, no gps, and no interface besides a tiny 7-segment lcd display and some 0-9 buttons for pincode entry.