Think of it as a stepping stone. Someday you'll likely be able to walk into a store, grab what you need, and walk out, all without stopping at a register to pa

Think of it as a stepping stone. Someday you'll likely be able to walk into a store, grab what you need, and walk out, all without stopping at a register to pay. To (3), your credit card company already sells your data to advertisers. I'd be surprised if the googles of the world don't already have a feed of that information.