[DANmode]

> credit card itself can’t be used to ad targeting

Incorrect.

Credit card networks / issuers explicitly describe using payment, spending, and your personal data,

for marketing, personalization, audience segmentation, and advertising.

Mastercard’s privacy notice states that it may use personal and transaction-related information to: “Provide you with personalized services and recommendations” “Offer and support loyalty programs” “Provide content and advertising tailored to your individual interests” “Analyze spending behavior to improve the effectiveness of marketing programs and advertising.”

Visa has also historically offered an opt-out specifically for using card transaction data…

[fodkodrasz]

If only I could get rich, structured data access to my spending data... but many banks only allow pdf statement downloads, in inconvenient ways, and their UIs for drilling down into data...

Where can I buy my own data from the brokers?

[choppaface]

i meant the credit card number itself

[DANmode]

Yes, the card being swiped or entered and or the tokens associated with that card

is the primary key the advertisers are identifying your purchases by,

through the help of the card issuing authority.