A Eurail pass must be activated before it can be used. Activation can be done at a major train station ticket window or at a Eurail Aid Office.
An activated pass will show the first and last day of validity of the pass. Activation must take place within 11 months of the issuing date stamp in the upper right corner of your pass.
Activation on board by the train inspector is allowed only if the passholder is entering the valid country on a train from a country where the pass is not valid. In this case, the passholder must report to the train staff immediately upon boarding the train—do not wait for a conductor to come to you.
Failure to activate your pass will result in a payment of the full-fare ticket and a maximum fine of €200.