Lockpicking a Tesa TK100 euro profile cylinder. It has 10 regular pin stacks with some security pins and one additional pin at the upper side of the keyway which is operated by an active element in the key.
The tips of the five key pins on the right hand side are aligned. However the tips of the five key pins on the left hand side are either a little bit shifted towards the right or left hand side. If you turn the core by 360° nothing unexpected happens.
