GPRS is usually pretty quick for this. The dentist's one was probably using some... | Hacker News

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rsynnott on June 26, 2017 | parent | context | favorite | on: Ask HN: Why are credit card chip readers so slow?

GPRS is usually pretty quick for this. The dentist's one was probably using some form of dial-up, either over GSM or POTS.

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