<s>
Wireless	B-General_Concept
security	I-General_Concept
cameras	I-General_Concept
are	O
closed-circuit	O
television	O
(	O
CCTV	O
)	O
cameras	O
that	O
transmit	O
a	O
video	O
and	O
audio	O
signal	O
to	O
a	O
wireless	O
receiver	O
through	O
a	O
radio	O
band	O
.	O
</s>
<s>
Many	O
wireless	B-General_Concept
security	I-General_Concept
cameras	I-General_Concept
require	O
at	O
least	O
one	O
cable	O
or	O
wire	O
for	O
power	O
;	O
"	O
wireless	O
"	O
refers	O
to	O
the	O
transmission	O
of	O
video/audio	O
.	O
</s>
<s>
However	O
,	O
some	O
wireless	B-General_Concept
security	I-General_Concept
cameras	I-General_Concept
are	O
battery-powered	O
,	O
making	O
the	O
cameras	O
truly	O
wireless	O
from	O
top	O
to	O
bottom	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
ease	O
of	O
use	O
and	O
convenience	O
of	O
access	O
,	O
wireless	B-General_Concept
security	I-General_Concept
camera	I-General_Concept
allows	O
users	O
to	O
leverage	O
broadband	O
wireless	O
internet	O
to	O
provide	O
seamless	O
video	B-Algorithm
streaming	I-Algorithm
over-internet	I-Algorithm
.	O
</s>
<s>
Currently	O
,	O
the	O
majority	O
of	O
wireless	B-General_Concept
security	I-General_Concept
cameras	I-General_Concept
operate	O
on	O
the	O
2.4GHz	O
frequency	O
.	O
</s>
<s>
Most	O
household	O
routers	O
,	O
cordless	O
phones	O
,	O
video	O
game	O
controllers	O
,	O
and	O
microwaves	O
operate	O
on	O
the	O
2.4GHz	O
frequency	O
and	O
may	O
cause	O
interference	O
with	O
a	O
wireless	B-General_Concept
security	I-General_Concept
camera	I-General_Concept
.	O
</s>
<s>
Wireless	B-General_Concept
security	I-General_Concept
cameras	I-General_Concept
are	O
becoming	O
more	O
and	O
more	O
popular	O
in	O
the	O
consumer	O
market	O
,	O
being	O
a	O
cost-effective	O
way	O
to	O
have	O
a	O
comprehensive	O
surveillance	O
system	O
installed	O
in	O
a	O
home	O
or	O
business	O
for	O
an	O
often	O
less	O
expensive	O
price	O
.	O
</s>
<s>
Since	O
there	O
is	O
no	O
need	O
to	O
run	O
video	O
extension	O
cables	O
through	O
walls	O
or	O
ceilings	O
(	O
from	O
the	O
camera	O
to	O
the	O
receiver	O
or	O
recording	O
device	O
)	O
one	O
does	O
not	O
need	O
approval	O
of	O
a	O
landlord	O
to	O
install	O
a	O
wireless	B-General_Concept
security	I-General_Concept
camera	I-General_Concept
system	O
.	O
</s>
<s>
A	O
wireless	B-General_Concept
security	I-General_Concept
camera	I-General_Concept
is	O
also	O
a	O
great	O
option	O
for	O
seasonal	O
monitoring	O
and	O
surveillance	O
.	O
</s>
<s>
Wireless	B-General_Concept
security	I-General_Concept
cameras	I-General_Concept
are	O
also	O
used	O
by	O
law	O
enforcement	O
agencies	O
to	O
deter	O
crimes	O
.	O
</s>
<s>
An	O
example	O
of	O
this	O
application	O
is	O
the	O
deployment	O
of	O
hundreds	O
of	O
wireless	B-General_Concept
security	I-General_Concept
cameras	I-General_Concept
by	O
New	O
York	O
City	O
Police	O
Department	O
on	O
lamp	O
posts	O
at	O
many	O
streets	O
throughout	O
the	O
city	O
.	O
</s>
<s>
Wireless	B-General_Concept
security	I-General_Concept
cameras	I-General_Concept
function	O
best	O
when	O
there	O
is	O
a	O
clear	O
line	O
of	O
sight	O
between	O
the	O
camera(s )	O
and	O
the	O
receiver	O
.	O
</s>
