“What happens when the little girl scouts come to your front door? Pay her with a smart phone app? PayPal?”
Yes. Little kids are practically born with touchscreens these days. Kid devices are waterproof, padded and for more indestructible than paper cash.
So a Girl Scout would theoretically punch in your order on her device. Then you’d review the price and tap your device to pay. I know kids in middle school already using phones to exchange cash with friends.
Payment instantly made, no change needed and you get emailed a receipt. Every transaction is traced and no way to lose it or get robbed.
There’s many advantages to a cashless system. But giving up all privacy and control to banks outweighs them IMO
Then you won't mind me hacking into your account.
What about when the hackers come around and clean out your accounts? What proof do you have they even existed?