<s>
In	O
photography	O
,	O
the	O
shutter-release	O
button	O
(	O
sometimes	O
just	O
shutter	O
release	O
or	O
shutter	B-Algorithm
button	I-Algorithm
)	O
is	O
a	O
push-button	O
found	O
on	O
many	O
cameras	O
,	O
used	O
to	O
record	O
photographs	O
.	O
</s>
<s>
Mobile	O
devices	O
such	O
as	O
modern	O
smartphones	B-Application
have	O
a	O
touchscreen	B-Device
button	O
for	O
capturing	O
photos	O
,	O
but	O
also	O
have	O
a	O
physical	O
shutter	B-Algorithm
button	I-Algorithm
as	O
well	O
,	O
as	O
the	O
sound	O
volume	O
buttons	O
are	O
used	O
as	O
such	O
.	O
</s>
<s>
In	O
modern	O
or	O
digital	B-Application
photography	I-Application
,	O
this	O
notion	O
is	O
less	O
meaningful	O
,	O
so	O
the	O
term	O
"	O
shutter	B-Algorithm
button	I-Algorithm
"	O
or	O
simply	O
"	O
capture	O
button	O
"	O
is	O
more	O
used	O
.	O
</s>
