Replace the glass cooler doors in the drink section with huge screens that display ads abd obscure the contents, then use a sketchy motion sensor to trigger a delayed screen full of what's probably inside the cooler.
Oh wait nvm, they've already got that.
Mandatorily implanted lenses in your eyes that track your location and collect all the data off everything you see, trading it out over Wi-Fi while downloading ads for your surroundings in real time while simultaneously leaking your private information, telling the government everything, and ratting you out to your employer and insurance company.
But only if it's cheaper than a brain chip that does the same things.