GUIDES: a graphical user identifier scheme using sketching for mobile web-services

In this paper, a novel graphical user identifier scheme for web-based mobile 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, GUIDES (Graphical User IDEntifier using Sketching) is proposed in this paper. With GUIDES, a user can input its user identifier, called GUID (Graphical User ID), by drawing a sketch on a mobile touchscreen device. From our experiments, it is concluded that GUIDES can enable a user input his/her User-ID more efficiently and remember it more, compared with the text-based user-id scheme.