legitimacija

1. ID card; student card; membership card
   Policajac mi je pokazao svoju legitimaciju. — The police officer showed me his ID.
   Sa studentskom legitimacijom imaš popust u bioskopu. — With a student card you get a discount at the cinema.
2. formal legitimacy; mandate; authority
   Vlada nema legitimaciju da donese takvu odluku. — The government has no mandate to make such a decision.

The national identity card is lična karta; legitimacija is usually a student, service or membership card.