I would like to know how much personally identifying information (PII), or de-anonymizable information, merchants can collect, and how to avoid providing as much as possible.
Specifically, what kind of PII can an offline US merchant collect from the physical faces of a credit card, or from the magstripe or chip of a credit card, to use for marketing purposes or any other purpose beyond the immediate transaction? Is it common practice for merchants to scrape and store my name or other personal information by swiping the card, and use it later for other purposes?
And, what can I do as a consumer who is concerned about my privacy to limit the data that can be collected by the merchant?
NOTE re: PUT ON HOLD as Off-Topic... This question seems to fall squarely within the community guidelines on Spending Wisely, specifically the bullet point "Consumer issues or consumer protections". Reference to merchant agreement has been removed. Consumer privacy is a huge and growing issue, and consumers absolutely have a right to be informed about how various financial vehicles affect their privacy. Putting personal finance privacy questions outside of the community guidelines does a great disservice to consumers using this site.