Grocery stores will no longer accept physical currency, for example, and if you don't pay them via digital, you're likely to starve.
There will be digital gangs, and crime will be less about violence, and more about theft.
I don't know about you.
I will never starve.
Nature has a near unlimited supply of edible wild plants, if there is ever a point where I cannot buy food I will forage for it.
Hunting is prohibited w/o licenses, foraging is not.