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by jgillette 4285 days ago
I will say, one time a few years back I needed to get a receipt from a purchase more than 60 days old. I called the local store, and she said "just give me your credit card number and I can lookup your transactions". With just my card number she was able to see every transaction I made with that card (and find my purchase I needed the receipt for). So (at least 3-4 years ago) it was being stored somewhere searchable by people in the back office.
1 comments

Or at least a hash generated from it was stored.