<s>
Mouse	B-Device
tracking	I-Device
(	O
also	O
known	O
as	O
cursor	O
tracking	O
)	O
is	O
the	O
use	O
of	O
software	O
to	O
collect	O
users	O
 '	O
mouse	O
cursor	O
positions	O
on	O
the	O
computer	O
.	O
</s>
<s>
Often	O
this	O
is	O
done	O
on	O
the	O
Web	O
and	O
can	O
supplement	O
eye	B-General_Concept
tracking	I-General_Concept
in	O
some	O
situations	O
.	O
</s>
<s>
When	O
mouse	B-Device
tracking	I-Device
takes	O
place	O
without	O
the	O
user	O
's	O
consent	O
,	O
for	O
example	O
on	O
a	O
website	O
,	O
there	O
may	O
be	O
privacy	O
implications	O
.	O
</s>
<s>
The	O
computer	B-Device
mouse	I-Device
was	O
first	O
invented	O
in	O
1968	O
by	O
Douglas	O
Engelbart	O
.	O
</s>
<s>
The	O
term	O
mouse	B-Device
tracking	I-Device
originally	O
referred	O
to	O
how	O
movements	O
were	O
captured	O
and	O
transmitted	O
to	O
the	O
computer	O
.	O
</s>
<s>
With	O
the	O
advent	O
of	O
the	O
World	O
Wide	O
Web	O
,	O
mouse	B-Device
tracking	I-Device
was	O
expanded	O
to	O
include	O
click	O
data	O
.	O
</s>
<s>
More	O
recently	O
,	O
the	O
term	O
mouse	B-Device
tracking	I-Device
has	O
been	O
expanded	O
even	O
more	O
to	O
develop	O
a	O
much	O
broader	O
area	O
of	O
research	O
in	O
helping	O
understand	O
the	O
human-computer	O
interaction	O
(	O
HCI	O
)	O
.	O
</s>
<s>
This	O
development	O
began	O
with	O
eye	B-General_Concept
tracking	I-General_Concept
.	O
</s>
<s>
While	O
eye	B-General_Concept
tracking	I-General_Concept
has	O
been	O
around	O
since	O
the	O
1800s	O
,	O
it	O
was	O
not	O
used	O
in	O
HCI	O
until	O
the	O
1980	O
,	O
primarily	O
to	O
help	O
answer	O
questions	O
about	O
how	O
users	O
search	O
for	O
commands	O
in	O
computer	O
menus	O
and	O
to	O
develop	O
systems	O
to	O
help	O
disabled	O
users	O
.	O
</s>
<s>
More	O
recently	O
,	O
eye	B-General_Concept
tracking	I-General_Concept
has	O
been	O
used	O
in	O
usability	O
testing	O
on	O
web	O
pages	O
to	O
understand	O
a	O
user	O
's	O
point	O
of	O
focus	O
as	O
well	O
as	O
test	O
the	O
usability	O
of	O
different	O
features	O
of	O
a	O
site	O
,	O
such	O
as	O
dropdown	O
menus	O
.	O
</s>
<s>
The	O
problem	O
with	O
using	O
eye	B-General_Concept
tracking	I-General_Concept
in	O
usability	O
testing	O
is	O
the	O
required	O
hardware	O
and	O
then	O
expense	O
.	O
</s>
<s>
Additionally	O
,	O
eye	B-General_Concept
tracking	I-General_Concept
is	O
limited	O
to	O
small	O
sample	O
sizes	O
and	O
abnormal	O
browsing	O
environments	O
.	O
</s>
<s>
Mouse	B-Device
tracking	I-Device
,	O
on	O
the	O
other	O
hand	O
,	O
is	O
inexpensive	O
and	O
the	O
data	O
can	O
be	O
collected	O
from	O
any	O
computer	O
.	O
</s>
<s>
It	O
is	O
in	O
this	O
capacity	O
that	O
mouse	B-Device
tracking	I-Device
was	O
re-invented	O
in	O
HCI	O
research	O
.	O
</s>
<s>
Eye	B-General_Concept
tracking	I-General_Concept
researchers	O
in	O
the	O
late	O
1990s	O
noticed	O
patterns	O
between	O
the	O
eye	O
and	O
mouse	O
movements	O
.	O
</s>
<s>
Specifically	O
,	O
researchers	O
are	O
trying	O
to	O
parse	O
out	O
what	O
different	O
individual	O
movements	O
mean	O
as	O
well	O
as	O
beginning	O
to	O
use	O
mouse	B-Device
tracking	I-Device
in	O
usability	O
testing	O
to	O
improve	O
products	O
and	O
pages	O
.	O
</s>
<s>
JavaScript	O
is	O
implemented	O
as	O
part	O
of	O
a	O
Web	O
browser	O
and	O
is	O
supported	O
by	O
all	O
the	O
major	O
web	O
browsers	O
,	O
including	O
Internet	B-Application
Explorer	I-Application
,	O
Firefox	B-Application
and	O
Safari	B-Application
.	O
</s>
<s>
Mouse	B-Device
tracking	I-Device
using	O
JavaScript	O
has	O
been	O
deployed	O
on	O
high-traffic	O
websites	O
such	O
as	O
search	O
engines	O
to	O
collect	O
mouse	O
movement	O
data	O
without	O
affecting	O
the	O
user	O
's	O
computer	O
performance	O
.	O
</s>
<s>
Current	O
mouse	B-Device
tracking	I-Device
tools	O
provide	O
a	O
variety	O
of	O
data	O
including	O
the	O
location	O
of	O
the	O
mouse	O
(	O
in	O
terms	O
of	O
pixels	O
)	O
,	O
time	O
stamps	O
,	O
any	O
time	O
the	O
mouse	O
hovers	O
on	O
a	O
link	O
of	O
interest	O
,	O
mouse	O
clicks	O
,	O
time	O
spent	O
in	O
areas	O
of	O
interest	O
,	O
and	O
duration	O
of	O
hovers	O
.	O
</s>
<s>
Mouse	B-Device
tracking	I-Device
allows	O
Web	O
developers	O
to	O
view	O
the	O
behaviors	O
of	O
actual	O
users	O
in	O
their	O
natural	O
browsing	O
environment	O
instead	O
of	O
in	O
a	O
laboratory	O
.	O
</s>
<s>
An	O
example	O
of	O
how	O
mouse	O
movements	O
can	O
be	O
used	O
for	O
online	B-Application
security	I-Application
is	O
as	O
follows	O
.	O
</s>
<s>
For	O
users	O
who	O
are	O
active	O
with	O
their	O
mouse	O
,	O
researchers	O
have	O
successfully	O
been	O
able	O
to	O
“	O
learn	O
”	O
a	O
user	O
’s	O
typical	O
behavior	O
through	O
a	O
supervised	B-General_Concept
learning	I-General_Concept
method	O
.	O
</s>
<s>
Mouse	B-Device
tracking	I-Device
has	O
been	O
used	O
in	O
education	O
to	O
help	O
understand	O
the	O
impact	O
of	O
reading	O
on	O
a	O
computer	O
as	O
opposed	O
to	O
paper	O
and	O
propose	O
ways	O
that	O
reading	O
on	O
a	O
computer	O
could	O
be	O
adapted	O
so	O
understanding	O
and	O
learning	O
were	O
easier	O
.	O
</s>
