Viele nehmen kein Bargeld, was der Abschaffung von ebendem - ob und wann das jemals passieren mag - in jedem Fall in die Arme spielt.
Die Kassen, die Bargeld nehmen, können viel einfacher automatisiert zum Seriennummern scannen benutzt werden und damit auch das Bargeld immer weiter deanonymisieren.
Sounds more like a Desktop environment question than a distro one to me.
Regarding the fingerprint scanner, as long as it's supported by the kernel it'll work - at least via the CLI. To have it easily usable for login and whatnot, I'd prefer a proper integration of touchscreen login into the DE, which by now at least Gnome, KDE and Cinnamon support.
For the usability with touch, for what I know at least: Gnome and KDE should be pretty usable. Cinnamon does not do so well (at least the last time I checked; e.g. scrolling the start menu by touch does not work as expected) For other DEs I don't know, they all should recognize the touch, albeit only treat it as if it were a mouse click. The only DE that ships a proper "touch mode" that I know of is KDE, but Gnome (due to its design nature) holds up pretty well using touch also.
A distro that unites that all well and provides a solid allround package with little manual configuration needed has been Fedora in my experience, however I'm very confident that more or less all other distros (Debian, Arch, Suse,...) are shipped or can be customized to make it properly usable for your use case
Dropping in a coin vs what seems to be downloading some sort of an app or at least opening some shady websites on your fucking phone over your fucking mobile data is where I see it. Even if you used the payment option, you'd have to disclose your online payment information to the provider. Privacy nightmare.
Still used with Bang !mcwiki tho