Nano marks used by the ITECH Register Control camera system for inking unit position detection. These nano marks are so small they are virtually invisible. The mark on the video is printed on a standard business card. Practically smaller than the head of a pin, it allows our clients to place the mark anywhere on the sheet, undetectable. Save paper space, reduce waste and paper usage. With the ITECH nano marks, our clients no longer settle for those larger, obtrusive legacy marks.