Method for controlling functions according to distance measurement between electronic devices and electronic device implementing the same

A method for controlling functions according to distance measurement between electronic devices, the method comprising:

• transmitting a sound transmission command from a second electronic device to a first electronic device;
• transmitting sound information and a sound from the second electronic device;
• and
• transmitting a command for stopping the sound transmission from the first electronic device to the second electronic device.

An electronic device comprising:

• a memory configured to store sound information, and reception times of the sound information and a sound;
• a wireless communication unit configured to transmit the sound information;
• a sound receiver configured to receive the sound;
• and
• a processor configured to transmit a sound transmission command, to measure a distance by identifying the sound information and the sound, and to decide performance of a predefined function by comparing the measured distance and the radius of a user area.

An electronic device comprising:

• a wireless communication unit configured to transmit a sound transmission command and a command for stopping a sound transmission;
• a sound receiver configured to transmit the sound;
• and
• a processor configured to receive the sound transmission command, to transmit the sound information and the sound, and to stop the sound transmission.