Summary: Cirrin: A word­level unistroke keyboard for pen input
Jennifer Mankoff and Gregory D. Abowd
GVU Center, College of Computing
Georgia Institute of Technology
Atlanta, GA 30332­0280
fabowd, jmankoffg@cc.gatech.edu
ABSTRACT
We present a new system, called Cirrin, for pen input of
ASCII characters using word­level unistrokes. Our system
addresses the tradeoff between speed and accuracy of pen­
based text entry by substituting precision on the part of the
user for ease of recognitionon the part of the computer. Cirrin
supports ease of recognition by the computer combined with
natural, script­like input. This paper discusses the design
space of word­level, unistroke input, focusing on the choices
made in the circular model of Cirrin that is currently in daily
use by the first author.
KEYWORDS: pen­based text entry, unistroke gestures
INTRODUCTION
Pen input of ASCII text is becoming a mainstream technol­

Source: Abowd, Gregory D. - College of Computing, Georgia Institute of Technology

Collections: Computer Technologies and Information Sciences