I registered my passport at MUC less than 12 months ago, so it was not a timeout issue. When I scanned the my passport at the EasyPass gate, I got an X on the screen. I attempted to ask the agent standing there if I was required to enter via Germany to use the exit gate, but the UK flag on his name badge apparently didn't actually mean that he speaks/understands English, so I gave up and entered the regular queue. FWIW, I entered Schengen via the Eurostar a week earlier.