2 ms·

Supermarkets do that. It's actually scary how much data they collect and what they can do with it. Target managed to figure out when people were pregnant: http:

• majewsky 10y ago
  And yet people laugh at me when I tell them how I buy as much as possible with cash.
• bbradley406 10y ago
  Much like RMS, I use a friend's discount card (and pay in cash) at the grocery store for this reason. Will a purchase of soda and cookies be linked to me and impact my health insurance cost down the road? Will targeted Mountain Dew ads make their way into every website I visit? Probably not, but I'd rather be sure. The self-checkout machines only ask for the phone number, with no id challenge. I get the discounts + no tracking, my friend gets more gas points, and the store is left wondering why he buys so much toilet paper. I wonder how long it will be before they start cracking down on this somehow, and how far they'll take it.