MaxiCode

MaxiCode is a 2-D bar code symbology developed by United Parcel Service for package tracking. It consists of a grid of dots with a bullseye in the center. It has several patents on it, but they are expired putting the technology in the public domain. It has been standardized as ISO/IEC 16023:2000.

Patents

 * U.S. Patent 4,874,936
 * U.S. Patent 4,896,029
 * U.S. Patent 4,998,010

Utilities

 * Generate MaxiCode
 * MaxiCode creator

Links

 * Wikipedia article