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Modern people usually store food in refrigerators. However, the busy people are always leaf the food pass the expiry date. The expired foods are wasted and caused environment pollution, even increased health risk. Thus, this innovative design employs microchips and electronic screening to display how many days remained before the deadline. The device applies sticking material in the backside to properly attach on the barcode positions of the foods. The implanted microchips will scan the barcodes and display the countdown days on the screens. Transparent plastic is applied and coated on the surface to provide waterproof functions.