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Researchers from Osaka University have developed a way of printing edible QR codes—a kind of barcode—within cookies, meaning that the tag is embedded within the food itself. Crucially, the tag doesn’t change the flavor or outer appearance of the cookie, and can be read using a backlight while the cookie remains intact. This new method has great commercial potential for improving food safety and traceability in an environmentally friendly way.
https://www.alphagalileo.org/en-gb/Item-Display/ItemId/226103
@estherschindler
Going to take a wait-and-see attitude with this. Maybe just being negative for no reason but can see the headlines: Edible QR Codes Cause Cancer.
Can definitely see the commercial impact though.