CitiCard, for one, offers unique 1-off numbers for online transactions just as y... | Hacker News

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markelliot on May 19, 2011 | parent | context | favorite | on: PSN has been hacked again

CitiCard, for one, offers unique 1-off numbers for online transactions just as you suggest. Last I checked AmEx Gold cards also granted this feature.

weaksauce on May 19, 2011 [–]

I heard of the one off card numbers before but I thought those were for just one month before they expire. Are they not? I haven't seen the amex gold one though thanks.

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