  Many models for physics Beyond the Standard Model predict an increased
production rate of tau leptons. Therefore hadronically decaying tau leptons
play an important role in searches for new physics at the LHC. By triggering on
them, the discovery power of ATLAS can be greatly enhanced for many Beyond the
Standard Model searches. In this contribution we present a brief description of
the ATLAS tau trigger system and demonstrate its robustness and reliability
during 2011.
