Method for authorizing the use of a motor vehicle, in particular a motor vehicle with two or four wheels which has at least a first and a second antenna, wherein the first antenna and the second antenna are located at a spatial distance from one another, using a portable identification provider, which has an identification provider antenna, having the following steps: - the first vehicle antenna transmits a first signal, which is received by the identification provider antenna, - the identification provider ascertains 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 transmits a second signal, which is received by the identification provider antenna, - the identification provider ascertains 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, and - a first computer, in particular a computer in the identification provider, ascertains the angle at least between the ascertained spatial component of the first electromagnetic field of the received first signal and the ascertained spatial component of the second electromagnetic field of the received second signal, characterized in that, in a further step, - the first vehicle antenna transmits not the first signal, but the second signal or a signal that is similar to the second signal, and the second vehicle antenna transmits not the second signal, but the first signal or a signal that is similar to the first signal, and the identification provider transmits a first authorization signal to the motor vehicle only if the ascertained first angle exceeds a predetermined first threshold value. - the first vehicle antenna transmits a first signal, which is received by the identification provider antenna, - the identification provider ascertains 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 transmits a second signal, which is received by the identification provider antenna, - the identification provider ascertains 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, and - a first computer, in particular a computer in the identification provider, ascertains the angle at least between the ascertained spatial component of the first electromagnetic field of the received first signal and the ascertained spatial component of the second electromagnetic field of the received second signal, characterized in that, in a further step, - the first vehicle antenna transmits not the first signal, but the second signal or a signal that is similar to the second signal, and the second vehicle antenna transmits not the second signal, but the first signal or a signal that is similar to the first signal, and the identification provider transmits a first authorization signal to the motor vehicle only if the ascertained first angle exceeds a predetermined first threshold value.