Figure 1. Finder patterns (black areas) for Aztec Code (left), Data Matrix (middle-left) and QR Code (right). PDF417 (middle-right) uses start (left side) and stop (right side) patterns

From

Reed-Solomon Based Bar Code Character Substitution Rates

Kevin Berisso

Journal of Business and Management Sciences. 2018, 6(3), 70-75 doi:10.12691/jbms-6-3-1