Server Device, Occupant Determination Method, and Occupant Determination Support Method

An occupant determination method performed by a server device,

• the server device including an on-board device information acquisition unit, a terminal request unit, and an occupant determination unit, the occupant determination method comprising:
• acquiring position information of an on-board device in an on-board device information acquisition procedure by the on-board device information acquisition unit;
• transmitting to a plurality of predetermined terminal devices, information indicating a riding determination request including the position information of the on-board device in a terminal request procedure by the on-board device information acquisition unit;
• and
• associating the terminal device and the on-board device with each other when the occupant determination unit receives a response from at least one terminal device out of the plurality of predetermined terminal devices that is present within a predetermined distance from the on-board device in an occupant determination procedure by the occupant determination unit.

An occupant determination support method performed by a terminal device,

• the terminal device including a position identification unit, a response determination unit, and a communication unit,
• the position identification unit performs a position identification procedure of identifying a position of the terminal device,
• when the response determination unit receives information indicating a riding determination request including position information of an on-board device from a server device, the response determination unit performs a response determination procedure of determining whether or not an interval between the position of the terminal device and a position of the on-board device is within a predetermined distance, and
• when the response determination unit determines that the interval is within the predetermined distance, the communication unit performs a communication procedure of transmitting a response to the server device.