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Gesture Keyboard - User centered design of a unique input device
for Indic Scripts
♦
Ashish Krishna
1
, Rahul Ajmera
1
, Sandesh Halarnkar, Prashant Pandit
HP Laboratories India
HPL-2005-56
March 18, 2005*
devnagari text
entry, gesture
keyboard (GKB),
matras, modifier,
syllable, IMEs
Indic text input presents a unique challenge in the field of keyboard
design because of the number of standalone characters, conjuncts, matras,
and symbols. It poses a huge challenge to the HCI practitioners to
accommodate the humongous array of Devnagari characters in a
keyboard. Solutions for input in Devnagari scripts using a physical
keyboard have been around for a while but none of them have emerged as
a standard mechanism due to several usability related concerns. In this
paper we have described the design of a new gesture based keyboard,
which has a dual input mode 1. Gesturing 2. Tapping. The "gesture
keyboard" concept is based on partial hand writing recognition as well as
touch-typing paradigms. Conceptually, it is a stylus sensitive keypad tha
t
supports tapping for getting the base consonants and some symbols,
while it also recognizes handwritten matras as per handwriting
recognition methods. This paper also reports the findings of the use
r
study, which was carried out to find the optimum sizes of the keys and
layouts.
* Internal Accession Date Only
♦
HCI International 2005, 22-27 July 2005, Las Vegas, Nevada, USA
1
Human Factors International, 4
th
Floor, Chemtex House, Hiranandani Gardens, Mumbai – 400 076, India
Approved for External Publication
© Copyright 2005 Hewlett-Packard Development Company, L.P.