Sketch Recognizers from the End-User's, the Designer's, and the Programmer's Perspective
Jason Hong, James A. Landay, A. Chris Long, Jennifer C. Mankoff · 2002
Although the accuracy and robustness of sketch recognizers have been steadily improving, there are still many issues involved in using them in applications. This paper details our experiences with using sketch recognizers from three different perspectives—end-users, user interface designers, and programmers—and describes some of the open research problems in each of these areas.