Earlier quoted context omitted.
> It used to be totally fine for one shopkeeper to mention to another that he saw a customer looking for a particular item. I dunno. If a shopkeeper kept detailed records of everything you've ever bought or looked at, and gave that info away, it would be pretty creepy.
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://www.forbes.com/sites/kashmirhill/2012/02/16/how-targe...
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.