to scan a barcode and list the information in the barcode to the computer.
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To signal that it it has analyzed the barcode
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Different bar code readers can be installed using Google's Play Store. The store offers a wide range of bar code scanners such as "Bar code Scanner from ZXing Team or Google's own implementation of a qr/bar code reader : Google Goggles.
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There are several companies that make hand held bar code readers. You can even get an app for your smart phone that will read bar codes. A major manufacturer of bar code reader is Motorola (they bought "Symbol" the leading bar code reader company a while back). Look at: http://www.motorola.com/Business/US-EN/Business+Product+and+Services/Bar+Code+Scanning
The bar code reader is one of the most important commercial products available. It allows people in all types of industries to track inventory and know it is time to reorder. The first readers were bulky and typically built into things like checkout lines. However, there are now portable readers and even readers that can be used for eCommerce businesses.
UPC is an universal product code and just about every item you buy comes with one. Every code for every item is different. It is put into the system by a UPC coordinator and when a UPC reader scans the code it can then keep track of inventory.
Keyence is a corporation that is located in Osaka, Japan. Their purpose is to produce various technology, such as bar-code readers, microscopes, and sensors.
Bar codes are used on almost all the products we see in stores. The store uses that bar code to automate and speed checkout.
Almost every product on sale - from a pen to a wide-screen tv has it's own unique, individual bar-code. Bar-code readers don't just help out at the checkout - they build up a stock list of items sold, so the store knows when to re-order new stuff.
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