(The use of barcodes for product identification in supermarkets is very old now. However, due to the need to use manual touch reading for barcodes, information can only be read but not injected, and multiple tags cannot be identified at the same time. The advantages of RFID technology can just manage the problems of barcode technology. However, RFID technology is not actually operating in supermarkets now, the main reasons are the high resources and the simple collision of multi-product label reading.)
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