<s>
VoiceOver	B-Operating_System
is	O
a	O
screen	O
reader	O
built	O
into	O
Apple	O
Inc.	O
'	O
s	O
macOS	B-Operating_System
,	O
iOS	B-Application
,	O
tvOS	B-Operating_System
,	O
watchOS	B-Device
,	O
and	O
iPod	B-Device
operating	O
systems	O
.	O
</s>
<s>
By	O
using	O
VoiceOver	B-Operating_System
,	O
the	O
user	O
can	O
access	O
their	O
Macintosh	B-Device
or	O
iOS	B-Application
device	O
based	O
on	O
spoken	O
descriptions	O
and	O
,	O
in	O
the	O
case	O
of	O
the	O
Mac	O
,	O
the	O
keyboard	B-Device
.	O
</s>
<s>
The	O
keyboard	B-Device
shortcut	O
to	O
activate	O
VoiceOver	B-Operating_System
is	O
Command-F5	O
.	O
</s>
<s>
VoiceOver	B-Operating_System
was	O
first	O
introduced	O
in	O
Mac	B-Application
OS	I-Application
X	I-Application
10.4	I-Application
and	O
the	O
target	O
was	O
users	O
who	O
had	O
difficulty	O
in	O
reading	O
due	O
to	O
vision	O
impairment	O
,	O
particularly	O
the	O
blind	O
.	O
</s>
<s>
A	O
preview	O
had	O
also	O
been	O
made	O
available	O
for	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
10.3	I-Operating_System
Panther	I-Operating_System
,	O
and	O
was	O
titled	O
"	O
Spoken	O
Interface	O
Preview.	O
"	O
</s>
<s>
VoiceOver	B-Operating_System
treats	O
the	O
user	O
interface	O
as	O
a	O
hierarchy	O
of	O
elements	O
,	O
which	O
are	O
navigated	O
by	O
various	O
keystrokes	O
.	O
</s>
<s>
Elements	O
also	O
are	O
"	O
interacted	O
"	O
with	O
—	O
for	O
example	O
,	O
interacting	O
with	O
a	O
text	O
box	O
allows	O
reading	O
its	O
text	O
and	O
,	O
if	O
possible	O
,	O
editing	O
it	O
;	O
interacting	O
with	O
a	O
scroll	O
bar	O
allows	O
it	O
to	O
be	O
moved	O
using	O
the	O
keyboard	B-Device
.	O
</s>
<s>
VoiceOver	B-Operating_System
also	O
includes	O
support	O
for	O
many	O
Braille	O
displays	O
.	O
</s>
<s>
In	O
addition	O
,	O
VoiceOver	B-Operating_System
includes	O
features	O
for	O
those	O
that	O
cannot	O
use	O
the	O
mouse	O
,	O
such	O
as	O
keyboard-based	O
navigation	O
.	O
</s>
<s>
For	O
users	O
with	O
MacBooks	B-Device
or	O
Magic	B-Device
Trackpads	I-Device
,	O
a	O
number	O
of	O
special	O
multitouch	B-Application
features	O
are	O
also	O
available	O
.	O
</s>
<s>
The	O
trackpad	O
will	O
respond	O
to	O
gestures	O
,	O
much	O
like	O
iOS	B-Application
's	O
version	O
of	O
VoiceOver	B-Operating_System
.	O
</s>
<s>
Also	O
,	O
Alex	B-Operating_System
voice	I-Operating_System
has	O
natural	O
breathing	O
,	O
unlike	O
all	O
other	O
voices	O
in	O
Apple	O
.	O
</s>
<s>
In	O
Mac	O
OS	O
X	O
10.7	O
,	O
Apple	O
offered	O
the	O
download	O
of	O
RealSpeak	O
voices	O
from	O
Nuance	O
for	O
use	O
with	O
VoiceOver	B-Operating_System
.	O
</s>
<s>
Accessibility	B-Operating_System
Inspector	I-Operating_System
is	O
made	O
to	O
verify	O
the	O
accessibility	O
of	O
OS	B-Operating_System
X	I-Operating_System
applications	O
.	O
</s>
<s>
It	O
displays	O
information	O
about	O
the	O
GUI	B-Application
element	O
that	O
is	O
currently	O
under	O
the	O
cursor	O
.	O
</s>
<s>
After	O
its	O
success	O
on	O
Macs	O
,	O
Apple	O
added	O
VoiceOver	B-Operating_System
to	O
the	B-Device
iPod	I-Device
Shuffle	O
.	O
</s>
<s>
This	O
assists	O
users	O
of	O
the	B-Device
iPod	I-Device
Shuffle	O
in	O
controlling	O
the	O
playback	O
of	O
songs	O
by	O
having	O
titles	O
read	O
out	O
.	O
</s>
<s>
With	O
the	O
2010	O
revision	O
of	O
iPod	B-Application
Shuffle	I-Application
,	O
the	O
user	O
can	O
also	O
have	O
VoiceOver	B-Operating_System
read	O
out	O
playlists	O
.	O
</s>
<s>
Unlike	O
VoiceOver	B-Operating_System
on	O
OS	B-Operating_System
X	I-Operating_System
,	O
where	O
VoiceOver	B-Operating_System
is	O
marketed	O
as	O
an	O
accessibility	O
feature	O
,	O
on	O
the	B-Device
iPod	I-Device
Shuffle	O
VoiceOver	B-Operating_System
is	O
intended	O
to	O
be	O
used	O
by	O
everyone	O
,	O
disabled	O
or	O
not	O
.	O
</s>
<s>
A	O
few	O
months	O
later	O
,	O
with	O
the	O
release	O
of	O
the	O
iPhone	B-Operating_System
3GS	I-Operating_System
,	O
VoiceOver	B-Operating_System
was	O
added	O
to	O
iOS	B-Application
.	O
</s>
<s>
When	O
the	B-Device
iPod	B-Device
Touch	I-Device
was	O
upgraded	O
to	O
match	O
the	O
hardware	O
of	O
the	O
iPhone	B-Operating_System
3GS	I-Operating_System
(	O
in	O
iPod	B-Device
touch	I-Device
's	O
third	O
generation	O
)	O
,	O
it	O
also	O
gained	O
VoiceOver	B-Operating_System
capability	O
.	O
</s>
<s>
The	O
iPad	B-Device
,	O
since	O
its	O
introduction	O
,	O
has	O
also	O
had	O
VoiceOver	B-Operating_System
capability	O
.	O
</s>
<s>
VoiceOver	B-Operating_System
on	O
iOS	B-Application
interacts	O
with	O
the	O
user	O
by	O
using	O
various	O
"	O
gestures	O
,	O
"	O
different	O
motions	O
one	O
makes	O
with	O
one	O
or	O
more	O
fingers	O
on	O
the	O
display	O
.	O
</s>
<s>
VoiceOver	B-Operating_System
can	O
also	O
turn	O
off	O
the	O
display	O
but	O
leave	O
the	O
touch	O
screen	O
sensitive	O
to	O
touch	O
,	O
saving	O
battery	O
power	O
.	O
</s>
<s>
It	O
is	O
also	O
available	O
on	O
Mac	O
computers	O
running	O
OS	B-Operating_System
X	I-Operating_System
.	O
</s>
<s>
VoiceOver	B-Operating_System
for	O
iOS	B-Application
is	O
activated	O
using	O
the	O
"	O
Settings	O
"	O
application	O
.	O
</s>
<s>
The	O
device	O
can	O
also	O
be	O
configured	O
so	O
that	O
VoiceOver	B-Operating_System
can	O
be	O
toggled	O
by	O
a	O
triple-click	O
of	O
the	O
Home	O
or	O
side	O
button	O
on	O
the	O
device	O
.	O
</s>
<s>
The	O
user	O
can	O
also	O
ask	O
Siri	O
to	O
enable	O
or	O
disable	O
VoiceOver	B-Operating_System
.	O
</s>
<s>
In	O
September	O
2010	O
,	O
Apple	O
launched	O
this	O
feature	O
on	O
the	B-Device
iPod	I-Device
nano	O
line	O
.	O
</s>
<s>
It	O
uses	O
many	O
of	O
the	O
same	O
gestures	O
as	O
the	O
iOS	B-Application
version	O
.	O
</s>
