Eyeball scan to save grandma?

The end scene from fight club, except in reverse. The banks stay up, and the debt stays, it's only everyone's assets that disappear.

I think we're just in the very early stages atm. In order for it to register with NPCs it will need to hit them where it hurts en masse and be hyped by the mainstream media. I reckon it could culminate in "global bank hacks" where its sold as your money has gone - here's a CBDC with same amount to f...