Upon becoming a Portuguese citizen, you are not required to obtain a Portuguese passport but only a Portuguese Citizen Card, which is a general ID card. However, there is some advantages in applying for a Portuguese passport for international travel.
Portugal allows dual nationality and there are several options for foreign residents looking to apply for a Portuguese passport without giving up the passport of their home country.
As Portugal is an EU country, a Portuguese passport allows its holder to travel around the world a Portuguese and EU citizen and enter/exit Portugal as many times as he/she wish.
Portuguese passports are issued through the Portuguese Ministry of Justice (Instituto dos Registos e do Notariado). In 2006, the Portuguese government began issuing electronic passports (Passaporte Eletrónico Português – PEP) with enhanced security features and biometric information. All new standard Portuguese passports are now issued as a PEP.