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2. Barcode reader - Wikipedia

   en.wikipedia.org/wiki/Barcode_reader

   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 ...

3. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   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 ...

4. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   Whereas a barcode is a machine-readable optical image that contains information specific to the labeled item, the QR code contains the data for a locator, an identifier, and web-tracking. To store data efficiently, QR codes use four standardized modes of encoding: (I) numeric , (ii) alphanumeric , (iii) byte or binary , and (iv) kanji . [ 4 ]

5. How to scan documents, text on iPhone: Upload and share ... - AOL

   www.aol.com/news/heres-scan-documents-text-apple...

   How to scan documents on iPhone. The release of iOS 11 in 2017 ushered in a new era for the iPhone notes app: scanning documents. The function has since been updated and has new features, but was ...

6. Barcode printer - Wikipedia

   en.wikipedia.org/wiki/Barcode_printer

   A barcode printer is a specialized device designed to create and print barcodes, which are machine-readable codes consisting of parallel lines or a matrix of squares. These barcodes serve various purposes across different industries. Some common uses of barcode printers include: Retail Industry. Product Labeling: Barcode printers are used to ...

7. PDF417 - Wikipedia

   en.wikipedia.org/wiki/PDF417

   PDF417 is a stacked barcode that can be read with a simple linear scan being swept over the symbol. [4] Those linear scans need the left and right columns with the start and stop code words. Additionally, the scan needs to know what row it is scanning, so each row of the symbol must also encode its row number.