| 摘要 |
The preset invention relates to an apparatus to authenticate a user and a method thereof. An apparatus to authenticate a user of the present invention includes: a user input/output unit to provide a plurality of cells having a grid cell structure on a touchscreen and to receive cell selection information of a user; a password setting unit to receive selection information about a plurality of password cells selected from the cells by the user in order to set a user password; and an authentication unit to provide an arbitrary starting cell selected from the cells, and sequentially comparing a selection direction of the adjacent cells selected by the user based on the starting cell with an arrow direction displayed on the password cells corresponding to the priority of the password cells to determine whether the selection direction is identical to the arrow direction, thereby approving user authority. According to the present invention, since a location of a real password cell cannot be recognized even though all the process of authenticating a user is recorded, it may be expected to prevent a user password from being easily seized. In addition, since the arrows are randomly output to the cells of each grid for every authentication, a very powerful security may be expected. |
