For example, in Portugal it is compulsory to carry the state ID card at all times. This card named Cartão de Cidadão - Citizen Card is an electronic card which includes biometric information, id number, social security number, fiscal information etc. Police can only ask for the ID card in public or a place open to public and only if there is a reasonable suspicion the person committed a crime. A certified copy of the ID card can be presented in such situations. If a citizen does not carry the ID card or its certified copy, the police will escort the person to the police department to remain detained until clear identification can be obtained.