Submitted by jimmysofat6864 t3_10oplmf in explainlikeimfive
saywherefore t1_j6hdr1w wrote
Reply to comment by scorch07 in ELI5: Why are contactless payment methods faster than inserting the chip? by jimmysofat6864
The vendor can check with the bank during contactless transactions, but there is no obligation to do so.
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