[JohnFen]

> So if you don't want to be tracked you can use that.

Or just not use anything at all. Or do what I do, and prefer shopping at stores that don't have a loyalty program. In my area, stores that have loyalty programs also have higher prices so that the "discount" from the loyalty card makes the price roughly the same as at similar stores that don't have a loyalty program.

So I go to the stores that don't have one. That's not only better for privacy, but is more frictionless and comes with no price penalty.