2D matrix codes are used for PCBs because of the low contrast requirement between the code and marking surface, around 20 percent. With this application, the 2D matrix is marked on the underside of ...

An automated system now replaces manual spot checks of 2D matrix codes on bottles coming off the line at a pharmaceutical manufacturing plant. The plant operator worked with ARKK Engineering Inc ...

A camera tracking a 2D data-matrix code strip creates a linear-positioning system that reports an absolute position within ±0.2 mm over a distance of 6 miles.