Barcodes

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What is a barcode Look on the bottom of a cereal box. Do you see a group of black bars and spaces That’s a barcode A barcode identifies a product. The thin bars thick bars and white spases are used in a different way for each product

Where are barcodes used The first barcodes were used in supermarkets. Clothing toy book and other stores also use them now. the barcodes help stores keep track of what they sell. Eech item in a library has a barcode. The post office uses barcodes to track mail

Can barcodes be used with people or animals Yes. Barcodes are used in hospitals blood banks and offices. Hospital barcodes have facts about the patients. Blood banks use barcodes to label the bludd. Some companies use barcode ID cards for their workers. Researchers put barcodes on animals