Would you like a QR code embedded in that cookie? Unobtrusive edible tags using food 3D printing

There is currently a race to develop edible tags for food so that, for example, you can see where the food comes from or its ingredients, and the information disappears once you've eaten it. Now, researchers from Japan have developed a way to include an unobtrusive edible tag embedded inside the food—in their original experiments, cookies—that can be read without having to first destroy the food. Another major advantage of their method, known as "interiqr," is that the tag doesn't change the outer appearance or taste of the food at all.

from Tech Xplore - electronic gadgets, technology advances and research news https://ift.tt/Ov4qJ5e