In this case they've improved their customer's lives

I mean really... Who wants to go towards Mount Isa?

Kachinteroperability?

What's the chance this will work with any other bank's commercial or private customers? What about other phones, possibly ones with inbuilt NFC like Google a producing.

I suspect it's somewhere around zero percent (but I sincerely hope the banks/manufacturers/telcos make me eat my words on this).

Good to see! I never had one, but a friend did and it was always intriguing to fiddle with.