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Failures in card payment systems has caused "chaos" at supermarket checkouts across the country.
Over 870 branches of Sainsbury's were affected by the problems with credit and debit cards.
The difficulties lasted for about 20 minutes at 2.30pm, according to a spokesman for the chain.
He said many other retailers experienced a similar problem.
"Many retailers across the country were affected by an issue with card payment systems today," he said.
Source: Chaos At Supermarkets As Card Payments Fail
Originally posted by Gazrok
Unfortunately though, real cash can also be a liability.
It can be stolen, never traced (and thus never recovered)...so there's a real risk involved.
Please don't carry large amounts of cash on you. (i.e. never carry more than you can afford to lose).