Method for preventing portable electronic device from being left in vehicle, the portable electronic device, and the vehicle

A method of a vehicle for preventing an electronic device from being left in the vehicle, the method comprising:

• identifying an off state of an engine of the vehicle;
• transmitting, to the electronic device, a first signal including information regarding the identification of the off state of the engine;
• identifying a change in a state of at least one seat of the vehicle;
• transmitting, to the electronic device, a second signal including information regarding the identification of the change in the state of the at least one seat;
• and
• executing an alarm function, upon receiving, from the electronic device, a third signal transmitted based on determining whether at least one of an acceleration value and a rotation angle value of the electronic device is changed,
• wherein the at least one of the acceleration value and the rotation angle value of the electronic device is measured by the electronic device when the electronic device receives the first signal from the vehicle, and
• wherein determining whether the at least one of the acceleration value and the rotation angle value of the electronic device is changed is executed by the electronic device when the electronic device receives the second signal.

An electronic device comprising:

• a communication device;
• a speaker;
• a sensor device configured to detect movement of the electronic device and comprising at least one of an acceleration sensor and a gyro sensor;
• and
• a controller configured to:
• identify at least one of an acceleration value and a rotation angle value of the electronic device using the at least one of the acceleration sensor and the gyro sensor, upon receiving, from a vehicle, through the communication device, a first signal including information regarding detection of an off state of an engine of the vehicle,
• determine whether the at least one of the acceleration value and the rotation angle value of the electronic device is changed, upon receiving, from the vehicle, through the communication device, a second signal including information regarding detection of a change in a state of at least one seat of the vehicle,
• determine that there is no movement of the electronic device, based on a result of determining whether the at least one of the acceleration value and the rotation angle value of the electronic device is changed, and
• output an alarm, if it is determined that there is no movement of the electronic device.

A vehicle comprising:

• a communication device;
• an engine switch device configured to turn an engine of the vehicle on or off;
• a seat occupancy detection device configured to detect a person sitting in at least one seat of the vehicle;
• and
• a controller configured to:
• upon detecting an off state of the engine through the engine switch device, transmit, to an electronic device, through the communication device, a first signal including information regarding the off state of the engine,
• upon detecting a change in state of the at least one seat of the vehicle through the seat occupancy detection device, transmit, to the electronic device, through the communication device, a second signal including information regarding the change in the state of the at least one seat, and
• upon receiving, from the electronic device, a third signal transmitted based on determining whether at least one of an acceleration value and a rotation angle value of the electronic device is changed, execute an alarm function,
• wherein the at least one of the acceleration value and the rotation angle value of the electronic device is measured by the electronic device when the electronic device receives the first signal from the vehicle, and
• wherein determining whether the at least one of the acceleration value and the rotation angle value of the electronic device is changed is executed by the electronic device when the electronic device receives the second signal.