Official Camino Passport (Credential)

The photo above is of a passport with stamps. This passport comes with no stamps, you collect them when you walk.  

Also have a look at the Pilgrim Passport Sleeve to protect your passport.

The credential has place for 54 stamps. This is the Official Pilgrim Credencial (Pilgrims Passport) issued by the Pilgrims Office in Santiago de Compostela. 

Walk the Camino and collect stamps along the way. Once at the Pilgrims Office in Santiago, show this document and you will receive your Compostela. 

A credential is required for pilgrims using public albergues.