I think even if this existed it would naturally become a vanity thing ("oh yes, I've read War and Peace") and not include Shades of Grey or whatever you're actu

I think even if this existed it would naturally become a vanity thing ("oh yes, I've read War and Peace") and not include Shades of Grey or whatever you're actually reading. Physical shelves already suffered from that a bit (people would use them to display books they were prod of), but it being a purely display and not necessary storage would do the rest.