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A comment on Ask HN: Why are credit card chip readers so slow?. Parent comment
Eg. TVR: 0000008000 (Byte 4 Bit 8) Transaction exceeds floor limit
Floor limit being the $/EUR/whatever amount that could be approved offline.
The 2 in the diagram appears to be pointing at a cleartext credit card number.
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Eg. TVR: 0000008000 (Byte 4 Bit 8) Transaction exceeds floor limit
Floor limit being the $/EUR/whatever amount that could be approved offline.
The 2 in the diagram appears to be pointing at a cleartext credit card number.