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<p>I just bought groceries at a Bristol Farms store, in Pasadena. I
paid with a credit card chip transaction.</p>
<p>And I noticed something on the receipt I've never seen before,
near the bottom is this stuff:</p>
<blockquote>ACCT: AMERICAN EXPRESS 151.14<br>
(timestamp with some extra digits and spaces off the end)<br>
AID: A000000… (ending in a good number of non-zero digits I'm too
lazy to try to copy)<br>
TVR: 0800008000<br>
TSI: E800<br>
TRANSACTION TYPE: 00<br>
APPLICATION ISSUER DATA: (13 hex digits)<br>
APPLICATION CRYPTOGRAM: (14 hex digits)<br>
CVM: 5E0300<br>
POS Entry Mode: 05<br>
Host Return Code 000<br>
</blockquote>
<p>The "application cryptogram" is what caught my eye…a message from
credit card chip, its answer to some challenge?</p>
<p><br>
</p>
<p>-kb, the Kent who was part of the big "Shopify 20% Off!" layoff
event this week, and so could use a job, BTW.<br>
</p>
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