Abstract:
A method and an apparatus for recognizing a three-dimension object using a light source are provided. The method of recognizing a three-dimension object of a terminal including a display unit for displaying an operation state of the terminal and a shoot unit for receiving an image includes receiving a first image by setting a first brightness as a brightness of the display unit, receiving a second image by setting a second brightness as the brightness of the display unit, and recognizing the three-dimension object based on brightness change of a preset part by comparing the second image with the first image. The apparatus and the method for recognizing a three-dimension object prevent a security function from being incapacitated using a two-dimension photograph.
Abstract:
A system and a method for dynamically unlocking a mobile device are provided. The method includes displaying various lock images, where at least one of the parts is altered, when an attempt is made to unlock the mobile device, determining whether a lock image, detected according to a user input, matches a preset image, and unlocking the mobile device according to the result of matching between the detected lock image and the preset image. The system and method increases the level of security when an unlock attempt is made in a public place.