A wireless communication system includes: a first wireless communication device configured to transmit a first wireless signal and receive a second wireless signal in conformity with a designated communication standard; and at least one second wireless communication device configured to transmit the second wireless signal and receive the first wireless signal in conformity with the designated communication standard. The first wireless communication device and the second wireless communication device perform a designated process more than once on a basis of transmission and reception of the first wireless signal and the second wireless signal. Each of the designated processes includes at least any of transmission and reception of the first wireless signal and the second wireless signal. Moreover, the first wireless signal and the second wireless signal used in the designated processes include secure information for identifying a transmission source of the first wireless communication device.