Electronic device and the operating method thereof

PURPOSE: An electronic device and an operating method thereof are provided to improve user experience by reinforcing security. CONSTITUTION: When locking release is requested, a writing recognition window is provided and string coordinate information is deducted (305). It is identified whether first character information is matched with second character information (307). When the first character information is matched with the second character information, a locking state is released (309). When the first character information is not matched with the second character information, the locking state is maintained (311). Characters comprising letters, symbols, numbers, and figures or a character string is extracted. [Reference numerals] (301) Receive a request for unlock; (303) Provide writing recognition window (recognition mode); (305) Deduct first character information by spelling out the coordinate of at least one stroke wrote in the writing recognition window; (307) Dose the first character information match for second character information?; (309) Release locking; (311) Maintain locking; (AA) Start; (BB) No; (CC) Yes; (DD) End