I was thinking trading cards too, but thinking of specifically trading them.

I wasn't really watching the images in the demo video, so at first I though he was transferring one image to another. This made me think it would be really cool if there were exactly one way to get a new image on your card: put it on a device that swaps two cards. You'd get a new image, but they'd lose theirs. So you'd actually have to commit to trading.

I guess that sounds a little like NFTs, but hopefully without the douchey scamminess.