<s>
Smart	B-Application
Sheriff	I-Application
(	O
)	O
is	O
a	O
South	O
Korean	O
parental	O
monitoring	O
mobile	B-Application
app	I-Application
,	O
introduced	O
in	O
2015	O
.	O
</s>
<s>
Further	O
,	O
critics	O
have	O
pointed	O
out	O
that	O
the	O
app	O
is	O
only	O
available	O
for	O
Android	B-Application
devices	O
,	O
leaving	O
a	O
loophole	O
for	O
users	O
of	O
other	O
platforms	O
,	O
such	O
as	O
Apple	O
iOS	B-Application
.	O
</s>
<s>
The	O
app	O
also	O
does	O
not	O
work	O
with	O
older	O
Android	B-Application
phones	I-Application
.	O
</s>
