The mobile phone signature remains valid after the introduction of the electronic proof of identity (ID Austria) as "Basic ID Austria" until the respective expiration date (5 years after activation).
What can the mobile phone signature be used for at TU Graz?
At TU Graz you can use ID Austria
to log in securely to all SSO applications of TU Graz without 2nd factor of TU Graz,
to reset yourself in TUGRAZonline a forgotten or expired password, and