To provide an in-vehicle device 20 in which, according to a position in a vehicle where a passenger is seated, an operation command which is permitted for the crew who is seated at the position can be set, in the in-vehicle device 20 for performing processing according to the operation command which is input by speech.

The in-vehicle device 20 of the invention 20 in which an operation command permitted for each seat position is determined beforehand, specifies the speech generation position of speech corresponding to the speech signal from the speech signal collected via a plurality of microphones 11, when the operation command is input by speech, and performs processing corresponding to the operation command, when the operation command by the speech is the one permitted at the generation position.