Forget expiration dates. Spoilage sensors could tell us when food actually goes bad
The firm BlakBear can integrate its paper-based gas sensors into scannable tags – which measures food spoilage, offering an alternative to expiration date labels. “Use by.” “Best by.” “Best if used by.” “Enjoy by.” Food companies in the US began dating their products with this patchwork of labels during the 1970s—often with little, if any,