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This would be an interesting database to play with. Using the data here you could backtrack where all the customers in a business live and work. Or you could go forward and figure out where all the people in an area shop. You can do the same with google maps and Apple data but idk if that info would be accessible

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If by interesting you mean horrifying then yes. Let's be clear, tracking people this way potentially gives you information about their job, religion, health status, clubs, friends, romantic relationships, and family members. It is a massive data liability, comparable to the credit score companies.

It’s nothing compared to the database chase has. Chase can tell you not only the above but they can break down what brand of mustard each neighborhood consumes and what color and style of underwear you prefer. This just seems like it would be easier for a startup to get access to.

Are merchants sharing purchase-level information with credit card companies now?

I think the corporate chase card breaks down a lot of the purchase details for my employer

That was my first thought: I'd be surprised if hedge funds don't already ingest this tracking data for their analytics.

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