Seriously. We're soooo over 1-d barcodes. Need to get a QR code on all that stuff. MMmmmmm.... Fiducial markers - that's hot

brb patenting higher dimensional barcodes / tensor barcodes

Finally, we can use holograms for something mundane!

Pretty neat. You can encode 100 megabytes of data in a 4x4x4x4 cm tesseract, just need to apply an appropriate rotation around two of its axes and then you can extract the information as it intersects with 3d space.

That adds an additional temporal component to the scanning process which makes me hesitant.

However, the idea is ridiculous enough to greenlight.

Just go full panopticon with a thousand cameras, so that the looters don't need to put in all that selfie effort.

That’s Amazon Go.

They usually use 2D barcodes for weighed items at the deli.

I mean you joke, but a local sports good store has switched to using RFID tags for all their products. First time I went shopping after the change was rather startling. I dumped my purchases at the cash register and almost immediately the cashier read me the total.

I see no reason supermarkets couldn't do similar once this sort of tech gets prolific enough.

afaik some of them use quite cool tech - fully automated sensors for just about anything plugged up to complex workflows and whatnot