How would that work? The barcode on the item doesn't get rewritten, the checkout counter can't distinguish who picked up which exact item. Even if they did assign unique barcodes to each item, what happens if you take the item off the shelf, and put it in someone else's cart? They'd be charged the wrong price for the item.

▲

rootlocus 3 hours ago | parent [-]

The store could make it mandatory to swipe your fidelity care before calculating your prices. They already do something similar with specialized promotions.

▲

Manuel_D 3 hours ago | parent [-]

If we're including promotions or membership discounts, then coupons fit this definition of price discrimination. And those have existed since the 90s at least.

	▲	Dylan16807 6 minutes ago \| parent [-]
		The problems show up when different people don't have access to the same coupons published by the store. Most coupons are fine. They haven't had the ability to do the significantly bad kinds of targeting until recently. This is a new problem even if it's similar to old practices at the surface level.