Electronic device, user terminal apparatus, and control method thereof

A user terminal device, comprising:

• an input unit;
• a capturing unit;
• a communicator;
• and
• a processor configured to:
• transmit a connection request signal to an electronic apparatus through the input unit according to a user command,
• transmit an image captured by the capturing unit to the electronic apparatus corresponding to the connection request signal,
• receive authentication information based on the image transmitted to the electronic apparatus, and
• based on the authentication information on the connection request signal being received from the electronic apparatus, perform peer-to-peer (P2P) communication with the electronic apparatus based on the authentication information.

A controlling method for a user terminal device, the method comprising:

• transmitting a connection request signal to an electronic apparatus according to a user command;
• transmitting an image captured by a capturing unit of the user terminal device to the electronic apparatus corresponding to the connection request signal;
• receiving authentication information based on the image transmitted to the electronic apparatus;
• and
• based on the authentication information on the connection request signal being received from the electronic apparatus, performing peer-to-peer (P2P) communication with the electronic apparatus based on the authentication information.