Quick Response code
The Quick Response code was invented by a subsidiary of Toyota to track parts across the manufacturing process
Perhaps the coolest thing about QR codes is that Denso Wave, the company that invented them, never exercised their patent and released the technology for free!
- Finder Pattern (3 patterns): Located at the corners to help scanners identify and align the code
- Timing Pattern: Used to determine the grid structure
- Alignment Pattern: Repeatedly placed near the center in larger versions (version 2+)
The QR code has Finder Patterns (large squares) in three corners, horizontal and vertical timing patterns, and version/format information patterns. The Error Correction Code in the middle allows parts to be covered. As long as the Finder Patterns remain intact (corners not obscured), scanners can determine the QR code's position and rotation, while the rest (mostly data area) can be compensated through error correction.
QRCode Tools
