As well as the reading technique the used marking technology is of high importance. In the meantime there have come up several techniques. Reaching from ordinary printed labels to direct laser marking of the product we here want to give a short overview what’s state of the art at the moment.

• Indirect Marking / Labels: e.g. Thermotransfer, Inkjet, Laserprint
• Direct Marking: Laser (e.g. NDYAg Laser, CO2 Laser), Dot Peening, Direct print (e.g. Inkjet), Electrochemical Marking