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The special food sticky note with magic points is designed to inform people of the expiration date of the food in a refrigerator by a convenient way. When users put the food into a refrigerator, tear off a piece of food stick notes with a general number of magic points according to the shelf life of the food. The magic points will disappear with time, and each point represents one day. The remained few points inform users of eating it up in the next few days. So when all the points vanish, users will easily realize that the food has passed its expiry date.
Fangyuan Wu , Jinma Wang, Lei Wang wei Li, YI Ren