During automotive production, different sedans with differing types of equipment are manufactured in a large automotive plant. The plant needed to allow car bodies to easily pass through entry points while the personnel protection was constantly activated. As a solution, the C4000 Fusion safety light curtain from SICK could detect a large number of different skid beam patterns without additional sensors or indicators while differentiating them from someone's legs walking past, for example. The solution saved space and costs while maintaining a high level of availability and avoiding downtime.