Hidden password input system and password input method using the same

摘要

The present invention provides a hidden password input system comprising: a page generation unit generating an output page in which identification marks are indicated and an input function for key input is in activated, and an input page in which the identification marks are not indicated and the input function is activated, respectively, and outputting either the output page or the input page at predetermined time according to a predetermined order; an output control unit receiving the output page and the input page from the page generation unit and outputting the output page and the input page to a display unit of a device; an input control unit receiving an input key by sensing the touch of a user during output of the input page; and an authentication execution unit comparing the position of the input key, the input order and the input key received from the input control unit with a stored password through alignment positions of keys displayed on the output page and thus, determining whether to authenticate or not according to matching status. Therefore, the hidden password input system can improve security by securing confidentiality of a password since identification marks are not indicated at input of the password to prevent exposure of the password to a third person even though the password input behavior is exposed to the third person and accordingly, can improve usability by simply setting the password.