A method for reading at least one attribute stored in an ID token (106, 106'), wherein the ID token is assigned to a user, and wherein the ID token has a first interface, said method comprising the following steps: - authenticating the user to the ID token, - establishing a mobile radio link between a mobile radio device and a first computer system, wherein the mobile radio device has a second interface, - establishing a protected link via the mobile radio link and via the first and second interfaces between the first computer system and the ID token, wherein the first and second interfaces are configured for a wireless communication, wherein the range is less than 1 m, in particular less than 20 cm, and wherein the first and second interfaces can be configured in particular in accordance with a Near Field Communication, NFC, and/or ISO/IEC 1443A standard, - authenticating the first computer system to the ID token via the protected link, wherein the authentication of the first computer system to the ID token is performed with the aid of a certificate of the first computer system, wherein the certificate includes a specification of those attributes stored in the ID token for which the first computer system is authorised for read access, wherein the ID token checks the read authorisation of the first computer system for the read access to at least one of the attributes with the aid of the certificate, - following successful authentication of the user and the first computer system to the ID token, enabling read access of the first computer system to the at least one attribute stored in the ID token in order to transmit the at least one attribute, when it has been signed, via a network. - authenticating the user to the ID token, - establishing a mobile radio link between a mobile radio device and a first computer system, wherein the mobile radio device has a second interface, - establishing a protected link via the mobile radio link and via the first and second interfaces between the first computer system and the ID token, wherein the first and second interfaces are configured for a wireless communication, wherein the range is less than 1 m, in particular less than 20 cm, and wherein the first and second interfaces can be configured in particular in accordance with a Near Field Communication, NFC, and/or ISO/IEC 1443A standard, - authenticating the first computer system to the ID token via the protected link, wherein the authentication of the first computer system to the ID token is performed with the aid of a certificate of the first computer system, wherein the certificate includes a specification of those attributes stored in the ID token for which the first computer system is authorised for read access, wherein the ID token checks the read authorisation of the first computer system for the read access to at least one of the attributes with the aid of the certificate, - following successful authentication of the user and the first computer system to the ID token, enabling read access of the first computer system to the at least one attribute stored in the ID token in order to transmit the at least one attribute, when it has been signed, via a network.