UID markings were marked with a 20 watt q-switched ytterbium fiber laser. The 160mm focal length lens has a working distance of 176mm from lens to part. The parts were marked with UID markings and text as requested per the stickers attached with the samples. The 2D codes were marked at heights of 0.5” and 0.75”. The part was marked on both the painted surface and the unpainted bare surface. In addition, a linear 1D barcode was marked for comparison purposes. The code was in an Interleaved 2 of 5 format. Unfortunately, the linear barcode was not able to be read in the apps lab. However, the 2D data matrix codes read very well in the lab, on both the painted and the bare surfaces. One additional note is that the data matrix codes on the bare steel seemed to read easier than those based on the painted surface.