Method for authorizing the use of a motor vehicle, in particular a two-wheeled or four-wheeled motor vehicle, which has at least a first and a second antenna, wherein the first antenna and the second antenna are spatially remote from one another, by way of a portable identification transmitter that has an identification transmitter antenna, having the following steps: - the first vehicle antenna emits a first signal that is received by the identification transmitter antenna, - the identification transmitter establishes at least one of the spatial components of the first electromagnetic field of the received first signal, preferably using an angle-resolving magnetic field sensor, - the second vehicle antenna emits a second signal that is received by the identification transmitter antenna, - the identification transmitter establishes at least one of the spatial components of the second electromagnetic field of the received second signal, in particular using the angle-resolving magnetic field sensor, - a first computer, in particular a computer in the identification transmitter, establishes the angle at least between the established spatial component of the first electromagnetic field of the received first signal and the established spatial component of the second electromagnetic field of the received second signal, and - the identification transmitter transmits a first authorization signal for authorizing the use of the motor vehicle to the motor vehicle only when the established angle exceeds a predetermined threshold value, characterized in that - the identification transmitter is or becomes provided with a motion sensor, the motion sensor establishes whether it or whether the identification transmitter is being moved, and the identification transmitter transmits the first and/or a second authorization signal for authorizing the use of the motor vehicle to the motor vehicle only when the motion sensor establishes a movement of the identification transmitter. - the first vehicle antenna emits a first signal that is received by the identification transmitter antenna, - the identification transmitter establishes at least one of the spatial components of the first electromagnetic field of the received first signal, preferably using an angle-resolving magnetic field sensor, - the second vehicle antenna emits a second signal that is received by the identification transmitter antenna, - the identification transmitter establishes at least one of the spatial components of the second electromagnetic field of the received second signal, in particular using the angle-resolving magnetic field sensor, - a first computer, in particular a computer in the identification transmitter, establishes the angle at least between the established spatial component of the first electromagnetic field of the received first signal and the established spatial component of the second electromagnetic field of the received second signal, and - the identification transmitter transmits a first authorization signal for authorizing the use of the motor vehicle to the motor vehicle only when the established angle exceeds a predetermined threshold value, characterized in that - the identification transmitter is or becomes provided with a motion sensor, the motion sensor establishes whether it or whether the identification transmitter is being moved, and the identification transmitter transmits the first and/or a second authorization signal for authorizing the use of the motor vehicle to the motor vehicle only when the motion sensor establishes a movement of the identification transmitter.