MicroPDF417

MicroPDF417 is two-dimensional (2D) stacked barcode symbology invented in 1996,[1] by Frederick Schuessler, Kevin Hunter, Sundeep Kumar and Cary Chu from Symbol Technologies company.

As most of 2D barcodes, MicroPDF417 standard contains Reed–Solomon error correction with ability to read corrupted images and high data density.

However, data which can be encoded in MicroPDF417 is only 150 bytes or 250 alphanumeric characters in the biggest 4-columns version.

[5] MicroPDF417 barcode was patented in 1996,[1] by Frederick Schuessler, Kevin Hunter, Sundeep Kumar and Cary Chu from Symbol Technologies company.

[9] In 2006, MicroPDF417 standard was brought out as ISO/IEC 24728:2006[3] and can be used independently or as part of GS1 Composite barcode symbology.

MicroPDF417 has high encoding density and in this way, it can add more additional data in lower space.

[3]: 5.2.2  Row height should be from 2 to 5 times higher than minimal module (bar or space) width.

Every MicroPDF417 RAP consists from 10 modules, which are split to 3 black bars and 3 white spaces.

Each RAP row starts from black bar and ends with white space.

[3]: 5.10  Amount of error correction codewords are fixed for each barcode version.

MicroPDF417 error correction can recover erasures and substitution errors, where:[3]: 5.7.2 Here is example how all of these codewords are assembled into MicroPDF417 symbol:[3]: 5.11 LR(x) - Left Row Address Patterns (RAP) identifier.

CR(x) - Center Row Address Patterns (RAP) identifier.