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, corresponding to the authentication based on fingerprint information input from the fingerprint scanner of the external apparatus, being received from the external apparatus, display a screen corresponding to the authentication of the user account, 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 an operation, the operation 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, corresponding to the authentication based on fingerprint information input from a fingerprint scanner of the external apparatus, from 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.