User terminal apparatus, electronic apparatus, system, and control method thereof

An authentication system comprising:

• an external apparatus comprising a fingerprint scanner;
• and
• display apparatus;
• wherein the display apparatus is configured to:
• display a user interface (UI) for inputting a user account,
• transmit first information, for performing authentication associated with the user account through the external apparatus, to the external apparatus, and
• based on second information being received from the external apparatus, display a screen corresponding to the authentication of the user account, the second information corresponding to the authentication based on fingerprint information input from the fingerprint scanner of the external apparatus, the fingerprint scanner of the external apparatus being activated based on the transmitted first information.

A non-transitory medium that stores one or more instructions executed by a controller of a display apparatus for the display apparatus to perform operations, the operations comprising:

• displaying a user interface (UI) for inputting a user account,
• transmitting first information, for performing authentication associated with the user account through an external apparatus, to the external apparatus,
• receiving second information from the external apparatus, the second information corresponding to the authentication based on fingerprint information input from a fingerprint scanner of the external apparatus, the fingerprint scanner of the external apparatus being activated based on the transmitted first information, and
• displaying a screen corresponding to the authentication of the user account.