When I flew at the Wasserkuppe last summer, they had just started using a system that required the pilot to snap an electronic key into place before flight. At the end of the day all the billing info was rolled up and printed out. I was intrigued by the system.

When I went back in mid-fall hoping for some typical-for-that-time-of-year wave experience, they had quit using the system for some reason. I suspect they'd be glad to share their experience/thoughts if emailed. http://fliegerschule-wasserkuppe.de/

Terry