Vehicle

A vehicle comprising a controller being configured to:

• perform authentication of a portable device by communication with the portable device (i) when startup of a system of the vehicle is instructed or when the system is off, and (ii) when the portable device is within a first predetermined distance from the vehicle;
• perform the startup of the system of the vehicle when the startup of the system of the vehicle is instructed, under a condition that the authentication of the portable device is successful;
• perform reauthentication of the portable device when a predetermined movement of the vehicle is detected after the startup of the system of the vehicle, and perform theft prevention processing if the reauthentication of the portable device fails;
• perform the reauthentication of the portable device if the predetermined movement of the vehicle is detected after the startup of the system of the vehicle at a predetermined geographical position, and not perform the reauthentication of the portable device after the startup of the system of the vehicle at a geographical position other than the predetermined geographical position;
• and
• perform an announcement to bring the portable device within a second predetermined distance from a predetermined portion of the vehicle, which is shorter than the first predetermined distance, if the reauthentication of the portable device fails, and change a failure in the reauthentication of the portable device to success if the controller detects that the portable device is within the second predetermined distance from the predetermined portion of the vehicle.