I saw a Youtube video a while ago on how supermarket chains create customer profiles for each credit card. That way, they can get a better understanding of purchasing habits and how consumers react to price changes. Makes finding the most profitable price easy, you see.
In the US. In the EU that is illegal. That is why they offer voluntary bonus programs, where the data collection is explicitly allowed by the customer. Unlike facebook it is not necessary for the servicevthough and also they dont sell the data to third parties.
I saw a Youtube video a while ago on how supermarket chains create customer profiles for each credit card. That way, they can get a better understanding of purchasing habits and how consumers react to price changes. Makes finding the most profitable price easy, you see.
In the US. In the EU that is illegal. That is why they offer voluntary bonus programs, where the data collection is explicitly allowed by the customer. Unlike facebook it is not necessary for the servicevthough and also they dont sell the data to third parties.