How to find the student service desk that issues the KIT-card

The Student Service Desk is right inside the entrance to building 10.11. But the signposting in and around building 10.11. can be confusing and often gets moved or removed. So here's a map how to get to the service desk that hands out the KIT-cards:
If you look at the online KIT - Campusplan  you'll see building 10.11 as
10.11 on the official campus plan​
 
But for a better orientation you need to know where the service desk is that issues your KIT student card:
10.11. service desk here​
 
 
It's a bit of a labyrinth as the buildings are connected. So here's a map:
detailled map to the service desk​