What not everyone knows: when passengers are hurrying to catch a connecting flight at Frankfurt Airport they can take a shortcut to get to their gates faster. The airport has created “fast lanes” for this at the security checkpoints. They may be used on a priority basis by passengers whose flights is listed in the display boards at the checkpoints.
The fast lane system is very simple: display boards at the checkpoints list the current flights for which passengers may take advantage of the shortcuts. Friendly airport staff also help them get in the right line.
Both terminals at Frankfurt Airport now feature fast lanes everywhere that passengers cross from a non-Schengen to a Schengen zone or vice versa. For example, if they have arrived from Singapore and are continuing on to a destination within Germany or Europe.