Secure Authentication Using Graphical Password is an iOS based application, which allows the user to set a custom picture already stored in the phone or instantly click a picture as the Password. The picture chosen, will then be divided in 9 parts and represented as 3X3 cubes for authentication in a scrambled pattern. With the scrambled pattern, this application is a much secured authentication iOS application. The user has to choose select the scrambled cubes in the order as per set the original picture, like solving a puzzle. The selected picture will be saved in the phone device memory in the folder named with the user name underscore ( _ ) user id, i.e., username_userid. In this application, if the user credential are correct then only the application will be open and you can access the data.