This report attempts to solve the issue of the vulnerability in Port Safety´s product, LifeLadder. It does so, by designing an artefact which adds flexibility to a specific part of the modular system of LifeLadder, that part being the spacer. The report documents the process of analysing the problem, designing the solution, and testing the solution. The analysis is done using the theory of TRIN. With an adequate understanding of the problem, the design process can begin. This project is done based on the methods of iterative design and rapid prototyping.