My kid was recently gifted a Yoto Box which plays aIndio and he loves it. I can’t help but think that putting ebooks on scannable cards might be a seriously und

My kid was recently gifted a Yoto Box which plays aIndio and he loves it. I can’t help but think that putting ebooks on scannable cards might be a seriously underrated form factor. At that point you don’t need a file browser, networking, or anything. You just need to be able to read text and images off the card. The Yoto itself does need networking because the card is just an NFC tag that points to a file in a database somewhere that the player has to download. But something similar to a video game cartridge instead could probably work. IIRC a Nintendo Switch game cartridge costs about $10 per unit and in this use case you wouldn’t even need them to be that small so you could maybe get them cheaper.