Electronic device and method of controlling the same

A method of controlling an electronic device, the method comprising:

• outputting a user authentication information restriction through an input/output interface;
• determining user input characteristics, based on user authentication information input based on the user authentication information restriction;
• and
• outputting, through the input/output interface, the user authentication information restriction updated based on the determined user input characteristics.

A computer program product comprising a recording medium having stored therein a program for executing a method of controlling an electronic device, the method comprising:

• outputting a user authentication information restriction through an input/output interface;
• determining user input characteristics, based on user authentication information input based on the user authentication information restriction;
• and
• outputting, through the input/output interface, the user authentication information restriction updated based on the determined user input characteristics.