Very famous case: https://www.forbes.com/sites/kashmirhill/2012/02/16/how-target-figured-out-a-teen-girl-was-pregnant-before-her-father-did/#2497be416668 https

Very famous case: https://www.forbes.com/sites/kashmirhill/2012/02/16/how-target-figured-out-a-teen-girl-was-pregnant-before-her-father-did/#2497be416668 https://www.forbes.com/sites/kashmirhill/2012/02/16/how-targ...