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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 ...
A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode readers, of which ...
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 ...
Here’s one more app you can delete from your iPhone: that QR code and barcode scanner you only occasionally use. With an update rolling out today, Google’s Chrome mobile browser can do the job ...
The QR code itself is not new, having been around since the 1990s, with attempts by Snap and others to “make it cool” in recent years after people didn’t want to download QR code reader apps ...
Size: Extra small. I once thought that e-readers couldn’t get too small, but I’ve finally hit my limit with the Palma ($280), a phone-size reader that takes things just slightly too far in ...
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