A Graphical User Identifier Suggestion Function Scheme Using Sketching for Mobile Web-Services

Despite a rapid progress in biological authentication technologies for user identification, the traditional text-based UserID-and-password scheme has still widely been used even for mobile web-services. In the mobile usage, a virtual keyboard is difficult to use for input texts, which causes much time to input a text. To decrease the difficulty, the authors previously proposed Graphical User IDEntifier Scheme(GUIDES). GUIDES can enable a user input his/her User-ID more efficiently and remember it more, compared with the text-based user-id scheme. It was shown from our previous experiment that GUIDES was able to enable a user input his/her User-ID more efficiently and remember it more, compared with the text-based user-id scheme. In this paper, we propose a new method to construct a graphical user-ID to improve our GUIDES. The new method, called Graphical userID suggestion scheme, can give a user a user id similar to the user-specified user-ID when the user specifies the same user-id that has already been registered.