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The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...
A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [1] Like a flatbed scanner, it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals. Additionally, nearly all barcode readers contain decoder circuitry ...
Background. OMR tests form, with registration marks and drop-out colors, designed to be scanned by dedicated OMR device. OMR devices scanner reflectivity. software print laser printer document. optical character recognition pattern recognition barcodes UPC bar code. #2 pencil optical answer sheets examinations.
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Data encoder. A code is a set of symbols or signals that usually represent alphanumeric characters. When data are encoded, the characters are translated into machine-readable code. A label or tag containing the encoded data is attached to the item that is to be identified. Machine reader or scanner.
Now QR codes also serve a much different purpose: as a tool for scammers. In December 2023, the Federal Trade Commission warned of a new form of phishing. Appropriately coined quishing, the scam ...
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