This Thursday marks a milestone in American use of credit cards, as the country shifts to the use of so-called 'chip and dip', which requires an electronic pin rather than a signature.
From today, if a merchant doesn't have the technology to allow the new style of payment, they'll be liable for any fraud on that transaction.
But the rollout hasn't been entirely smooth, as Lorna Shaddick reports from New York.
IN: Chip and pin...
OUT: SOC
DUR: 47 seconds
POT: 34 seconds
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