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2. Barcode reader - Wikipedia

   en.wikipedia.org/wiki/Barcode_reader

   Barcode reader. A stationary barcode scanner for a conveyor line. 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.

3. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_code

   Rectangular Micro QR Code. Rectangular Micro QR Code (also known as rMQR Code) is two-dimensional (2D) matrix barcode invented and standardized in 2022 by Denso Wave as ISO/IEC 23941. rMQR Code is designed as a rectangular variation of QR code and has the same parameters and applications as original QR code.

4. Barcode - Wikipedia

   en.wikipedia.org/wiki/Barcode

   The older type is the RS-232 barcode scanner. This type requires special programming for transferring the input data to the application program. Keyboard interface scanners connect to a computer using a PS/2 or AT keyboard–compatible adaptor cable (a "keyboard wedge"). The barcode's data is sent to the computer as if it had been typed on the ...

5. 10 Receipt Scanner Apps That Reward You for Everyday Shopping

   www.aol.com/finance/best-receipt-scanner-apps...

   1. Fetch Rewards: Best for Free Gift Cards. Fetch Rewards lets you earn a minimum of 25 reward points by scanning digital and print receipts — 35 points minimum for qualifying purchases. It also ...

6. CueCat - Wikipedia

   en.wikipedia.org/wiki/CueCat

   CueCat barcode scanner and interposer cables with male and female PS/2 connectors. The CueCat, styled :CueCat with a leading colon, is a cat-shaped handheld barcode reader that was given away free to Internet users starting in 2000 by the now-defunct Digital Convergence Corporation (which often styled its own name as Digital:Convergence Corporation).

7. ZBar - Wikipedia

   en.wikipedia.org/wiki/ZBar

   ZBar is an open-source C barcode reading library with C++, Python, [2] Perl, and Ruby bindings. [3] [4] [5] It is also implemented on Linux and Microsoft Windows as a command-line application, [6] and as an iPhone application. [7] It was originally developed at SourceForge. [8]