Different parts of the QR code

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1) Quiet zone: a bare white border that makes it possible to distinguish the code from other printed information (for example, in a dirty envelope, between the black and white prints of a newspaper, or in the packaging of smoky products).

2) Finder pattern: The large black and white squares at three corners make it easy to make sure that it’s a QR code (and don’t say an Aztec code). Since only three of them exist, it is immediately clear in which direction and at what angle the code is pointing to it (unless the code is partially obscured or damaged in some way).

3) Alignment pattern: It ensures that the code can be deciphered even if it is distorted (seen at an angle, printed on a curved surface, etc.).

4) Timing pattern: It runs horizontally and vertically between the three finder patterns and consists of alternate black and white squares. The timing pattern makes it easy to identify individual data cells within a QR code and is especially useful if the code is damaged or distorted.

5) Version information: There are different versions of the QR code standard; Version information (located close to the two Finder patterns) simply identifies which one is being used in a particular code.

6) Data cell: Each individual black or white square that is not part of one of the standard features (time, alignment, and other patterns) contains some actual data in the code.
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