This change will eventually be worldwide. There will be no safe havens for fiat paper.
Then we end up with alternative currencies, from gold coins to silver jewelry.
In many parts of Africa, calling cards with cell phone air time are treated as currency. You can call home, transfer funds, check prices, check the weather, read news and call a nurse for medical advice or place orders using the phones. Such a thing isn’t unreasonable here given the prevalence of cell phones.