Mobile electronic device, position checking method, position checking program, and position checking system

A position checking method that is implemented by an electronic device including a communication unit and a notification unit, the position checking method comprising:

• performing, by the communication unit, short-distance communication with a first device;
• and
• when the short-distance communication with the first device is incapable of being performed,
• performing, by the notification unit, a local notification to a user of the electronic device, and
• transmitting, to a second device, an inquiry as to whether the short-distance communication between the first device and the second device is capable of being performed.

A non-transitory storage medium that stores a position checking program that causes, when executed by an electronic device including a communication unit and a notification unit, the electronic device to execute:

• performing, by the communication unit, short-distance communication with a first device;
• and
• when the short-distance communication with the first device is incapable of being performed,
• performing, by the notification unit, a local notification to a user of the electronic device, and
• transmitting, to the first device, a request for transmitting positional information of the first device.

A position checking system, comprising:

• a first device;
• a second device;
• a third device;
• and
• a base station, wherein
• the first device is configured to
• transmit, to the second device through communication via the base station or short-distance communication, an inquiry as to whether short-distance communication between the second device and the third device is capable of being performed when the short-distance communication between the first device and the third device is incapable of being performed, and
• transmit, to the second device through communication via the base station or short-distance communication, a reply whether the short-distance communication between the first device and the third device is capable of being performed when receiving an inquiry as to whether the short-distance communication between the first device and the third device is capable of being performed from the second device, and
• the second device is configured to
• transmit, to the first device through communication via the base station or short-distance communication, an inquiry as to whether short-distance communication between the first device and the third device is capable of being performed when the short-distance communication between the second device and the third device is incapable of being performed, and
• transmit, to the first device through communication via the base station or short-distance communication, a reply whether the short-distance communication between the second device and the third device is capable of being performed when receiving an inquiry as to whether the short-distance communication between the second device and the third device is capable of being performed from the first device.