Without power they could use backup sources but without telecoms isn't payment going to be difficult to impossible? (except those who had sufficient cash before the emergency)

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extraduder_ire 4 days ago | parent | next [-]

You can do offline verification of payment cards, there's just higher fees and lower limits on payments.

This is a common way people get their current accounts into debt without authorising an overdraught.

	▲	macintux 4 days ago \| parent \| next [-]
		When I was a kid, I remember the cashier at a department store checking a book for my mother’s credit card number. I misunderstood the nature of the book, assuming it was a list of valid card numbers. It was, of course, the opposite, so when I said to my mom “I hope they find your number in there” she replied “I hope they don’t!”
	▲	aDyslecticCrow 3 days ago \| parent \| prev [-]
		It's used by alot of vending machines or public transport. The bus can be off-grid while still allowing a ticket purchase. Im not that familiar with the protocol, but i could see there being a special clause to allow larger off-grid payments in emergency situations.

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14 4 days ago | parent | prev | next [-]

Well I assume if they set it up in mind that they would be operating in an emergency they could have something like Starlink and connect to payment processors.

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Maxious 4 days ago | parent | prev [-]

EMV cards can do offline auth