Number (6): Everything in this space must add up to 6. The answer is 3-3, placed vertically.
Ultimately, the most rigorous traceability solutions, including QR codes and microchips, won't be useful if people don't actually check them as a condition of making their purchases. Imitators can simply counterfeit QR code labels, for example.
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Nasa Apollo missions: Stories of the last Moon men
European Digital Rights (EDRi) edri.org🇧🇪