Software for desktops and workstations, i.e. units having sufficient processing resources, is increasingly designed to be variable and extensible, so that changing behaviour is supported and extensions can be included without any modifications to already existing application code. This is contrasted for embedded systems, where memory and computing power are often limited. For such entities, software is highly tailored and modifications often require complete redesign. In the area of positioning and sensors, the paper describes three options for embedded systems that allow software to be reused on the one hand and design and testing time being reduced on the other.