Due to the aging society there is an increasing need for appropriate technical devices for less dependent living. Walking aids, especially the so-called rollators, are frequently prescribed for people with gait and balance disorders to improve mobility. The term “rollator”, as defined by the International Organization for Standardization, is frequently used synonymous with the term “walker”, “wheeled walker”, “four-wheeled walker”, “rolling walker” or “walking frame”. Rollators are defined as walking aids with built-in handgrips and three or more legs of which two or more are having wheels, which provide support whilst walking. Additionally, they need to be equipped with a seat for resting.