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2. PDF417 - Wikipedia

   en.wikipedia.org/wiki/PDF417

   PDF417 is a stacked linear barcode format used in a variety of applications such as transport, identification cards, and inventory management. "PDF" stands for Portable Data File. The "417" signifies that each pattern in the code consists of 4 bars and spaces in a pattern that is 17 units (modules) long.

3. MicroPDF417 - Wikipedia

   en.wikipedia.org/wiki/MicroPDF417

   MicroPDF417 barcode symbol consists from at least two Row Address Patterns (RAP) columns which are used to detect row numbers and aligned to them Data Columns. [12] MicroPDF417 barcode symbol has four versions with 1, 2, 3 and 4 data columns. The barcode can be split to the following elements: [3]: 5.2.3 Quiet zone; Left RAP column

4. Universal Product Code - Wikipedia

   en.wikipedia.org/wiki/Universal_Product_Code

   A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

5. GS1 - Wikipedia

   en.wikipedia.org/wiki/GS1

   In 1973, the Universal Product Code (UPC) was selected by this group as the first single standard for unique product identification. In 1974, the Uniform Code Council (UCC) was founded to administer the standard. [1] On 26 June 1974, a pack of Wrigley's chewing gum became the first ever product with a barcode to be scanned in a shop. [1] [3]

6. Rectangular Micro QR Code - Wikipedia

   en.wikipedia.org/wiki/Rectangular_Micro_QR_Code

   Possible corner finder patterns [2]: 6.3.8 on top-right and bottom-left barcode corners. Main finder pattern is used to detect the barcode on image and its corruption can make barcode unrecognizable. Finder pattern has vertical and horizontal size 1-1-3-1-1. Finder sub pattern helps to detect bottom-right corner of the barcode.

7. Code 39 - Wikipedia

   en.wikipedia.org/wiki/Code_39

   The barcode scheme does not contain a check digit (in contrast to—for instance—Code 128), but it can be considered self-checking on the grounds that a single erroneously interpreted bar cannot generate another valid character. Possibly the most serious drawback of Code 39 is its low data density: It requires more space to encode data in ...