> but the new trend is surveillance pricing. A company will know that you just got paid and so charge you just a bit more for your chicken nuggets than they do when you haven’t been paid in two weeks.
First of all, no, a company has no idea when you get paid. The reality of lots of apps (like McDonald's) is discount pricing. You pay full price at the store if you're a rich person who can't be bothered with apps. Downloading an app and creating an account is the modern equivalent of cutting out coupons or buy-10-get-one-free cards -- price-conscious consumers will go to the trouble and get cheaper prices. They're just loyalty programs. Price discrimination like this is nothing new, and it lets rich people subsidize the lower costs for people with less money.
These apps run in sandboxes. There's not much to surveil. Obviously don't grant them permissions to see your contacts or track your location all the time. Will the app be able to tie all your purchases to a single identity? Of course. But the stores already do that anyways if you use the same credit card for each purchase.
I don't mind downloading apps for the 5-10 stores/restaurants I go to most. Beyond that, I obviously won't because it's too much of a hassle. But the loyalty discounts I get save me real money. I have no problem with that.