Direct Part Marking (DPM) indicates the application of a mark directly on the surface of a product without the use of a separate carrier material, such as e.g. an adhesive label. This makes it possible to identify products in production and tracing them after delivery as well. So-called 2D codes have been used for years in a coding method that meets all user requirements. 2D codes consist of easy to implement, point-shaped basic elements. Laser and needle marking technologies are outstanding regarding durability, marking speed and material independence. For example, because of mechanical deformation, 2D codes can still be read after multiple processing steps on metallic work pieces. 2D codes also provide the advantage of being able to encode data in more limited spaces than comparable barcodes or text.