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A comment on China has wealth of data on what individuals are doing at a micro level. Parent comment

Re:China has wealth of data on what individuals are doing at... by wfunction on Thursday January 12, 2017 @04:14AM (#13380914)
This sounds almost unbelievable. How sure are you that it wasn't suggested for some other reason? And how did they know WHAT you bought, given credit card companies don't get that info?
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Re:China has wealth of data on what individuals are doing at... by simonh on Thursday January 12, 2017 @05:02AM (#13381128)
Agreed, I don't see how that's possible given the strict controls over personally identifiable card purchase data. Somebody would have to be breaking the law.
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Re:China has wealth of data on what individuals are doing at... by throwaway91111 on Saturday January 14, 2017 @04:50PM (#13400766)
It's entirely possible they were going off of browsing history + where I bought from, but I've 100% had experiences where I appeared to see retargeted ads for same day purchases in brick and mortar stores. Perhaps they were joining through my credit card number only, which is also associated with my online profile?
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