<s>
The	O
Mouseless	B-Device
is	O
a	O
proposed	O
input	B-Device
device	I-Device
for	O
personal	O
computers	O
.	O
</s>
<s>
A	O
prototype	O
Mouseless	B-Device
,	O
designed	O
by	O
Pranav	B-General_Concept
Mistry	I-General_Concept
of	O
the	O
MIT	O
Media	O
Lab	O
.	O
</s>
<s>
Mouseless	B-Device
replaces	O
conventional	O
hardware	O
mouse	B-Device
with	O
a	O
set	O
of	O
infrared	O
laser	O
strobe	O
,	O
an	O
infrared	O
camera	O
and	O
image	O
recognition	O
software	O
.	O
</s>
<s>
The	O
user	O
rests	O
the	O
palm	O
on	O
the	O
desk	O
and	O
commands	O
the	O
system	O
in	O
the	O
same	O
way	O
as	O
he	O
or	O
she	O
would	O
do	O
with	O
a	O
conventional	O
mouse	B-Device
.	O
</s>
<s>
According	O
to	O
Mistry	O
 '	O
statement	O
,	O
the	O
fully	O
functional	O
prototype	O
of	O
the	O
Mouseless	B-Device
costs	O
around	O
$20	O
.	O
</s>
