Method for unlocking a vehicle locking system using an electronically readable identification document, which method comprises: authenticating a person in accordance with a method for authenticating a person using an electronically readable identification document, wherein the method for authenticating a person comprises establishing a first communication connection between a communication device and the identification document; establishing a second communication connection between an identification server and the communication device; reading an electronic identification from the identification document, this being carried out by the identification server via the first communication connection and the second communication connection; and comparing the read electronic identification with a pre-stored electronic identification in order to authenticate the person; wherein the method for unlocking a vehicle locking system comprises unlocking the vehicle locking system if the read electronic identification and the pre-stored electronic identification match; wherein the vehicle locking system is arranged in a vehicle, the vehicle comprising a communication interface for communication with the communication device; wherein the first communication connection to the electronically readable identification document is established via a terminal for communication with the electronically readable identification document, and wherein the reading of the electronic identification comprises carrying out a terminal authentication method in order to authenticate the terminal or the identification server; wherein the terminal comprises a card reader that is attached to the vehicle; wherein the communication device is a mobile communication device; wherein the identification server and the identification document carry out the terminal authentication method and a chip authentication method via the communication device. authenticating a person in accordance with a method for authenticating a person using an electronically readable identification document, wherein the method for authenticating a person comprises establishing a first communication connection between a communication device and the identification document; establishing a second communication connection between an identification server and the communication device; reading an electronic identification from the identification document, this being carried out by the identification server via the first communication connection and the second communication connection; and comparing the read electronic identification with a pre-stored electronic identification in order to authenticate the person; wherein the method for unlocking a vehicle locking system comprises unlocking the vehicle locking system if the read electronic identification and the pre-stored electronic identification match; wherein the vehicle locking system is arranged in a vehicle, the vehicle comprising a communication interface for communication with the communication device; wherein the first communication connection to the electronically readable identification document is established via a terminal for communication with the electronically readable identification document, and wherein the reading of the electronic identification comprises carrying out a terminal authentication method in order to authenticate the terminal or the identification server; wherein the terminal comprises a card reader that is attached to the vehicle; wherein the communication device is a mobile communication device; wherein the identification server and the identification document carry out the terminal authentication method and a chip authentication method via the communication device.