COMMUNICATION DEVICE, DISTANCE MEASURING DEVICE, AND AUTHENTICATION METHOD IN COMMUNICATION DEVICE

原文（中国語）

A communication device includes a processor configured to perform a sharing process in which data relating to a first frequency and a second frequency is shared with an external device, the first frequency and the second frequency being configured to be used to communicate with the external device, transmit and receive a high frequency signal with respect to the external device, and authenticate the external device as an authorized device, upon occurrence of a condition in which the processor receives the high frequency signal at the first frequency from the external device, after transmitting the high frequency signal at the first frequency to the external device, in conjunction with a condition in which the processor receives the high frequency signal at the second frequency from the external device, after transmitting the high frequency signal at the first frequency to the external device.