The US Army Corps of Engineers no longer accepts cash for campsites they manage. The US Government no longer accepts its own currency. That's where we are in the USA at least.
Not accepting cash should be illegal everywhere across the world. What if your battery dies?
My bank card doesn't even have a battery.
Or what if you don’t have a bank account?
If you live in the US, not participating in the banking system and not having a bank account is not a thing that you can do, except for religious reasons. From the moment you're born, you're on half a dozen companies' radars for credit reporting and scoring purposes, and most of the major purchases that you need to make to survive require a bank account with a good balance and a good credit score.
> An estimated 4.5 percent of U.S. households (approximately 5.9 million) were “unbanked” in 2021, meaning that no one in the household had a checking or savings account at a bank or credit union.
> If you live in the US, not participating in the banking system and not having a bank account is not a thing that you can do
Sure it is. Lots of people do. It's expensive, though.
Bank accounts are a necessary part of modern life in developed and many developing countries, and should be free and readily accessible to everyone.
There are plenty of places to get a free checking account, at least in the US. I don’t really understand why people wouldn’t have one.
Your credit/debit cards use batteries?
Related: My European bank will ask if I actually need the plastic physical card, and unless I do, they'll just issue a virtual card to load into my phone/smartwatch.
If I remember correctly the US military has their own payment network (Eagle Pay) and issues stored-value cards to the enlisted.