In this paper I investigate the usability of the multi-touch marking menus in multi-touch devices through three prototype applications that support multi-touch marking menus and I suggest a general area where they seem fit to be used. For the usability testing four testing methods were used. These methods are described further in this paper along with the resources used and the produced results. At the end of the paper the conclusions are given with the recommended area of usage of the multi-touch marking menus.
usability, usability testing, multi-touch, marking menu.