We already have digital currency; it's called Food Stamps.
How do I pay the guy who rakes my yard when people like that don't even have a phone sometimes?
I guess customers will have to buy fake cash at the strip club to tip the dancers.
That's the bullshit about digital currency, it doesn't work on the bottom levels of commerce.
Further more; think about the biggest money thefts in history; none of them involved cash.
All the theft and scams were digital.
Nigerian cannot not steal the $20 cash out of my pocket with email.