<s>
The	B-Application
Facebook	I-Application
Bluetooth	B-General_Concept
Beacon	I-General_Concept
is	O
a	O
hardware	O
beacon	B-Protocol
released	O
by	O
Facebook	B-Application
in	O
2015	O
.	O
</s>
<s>
The	O
beacon	B-Protocol
uses	O
a	O
bluetooth	B-Protocol
connection	O
to	O
communicate	O
with	O
the	B-Application
Facebook	I-Application
app	O
on	O
the	O
user	O
's	O
smartphone	O
,	O
informing	O
it	O
of	O
the	O
phone	O
's	O
location	O
.	O
</s>
<s>
The	O
technology	O
allows	O
location-specific	O
advertising	O
to	O
be	O
pushed	O
to	O
the	O
user	O
's	O
Facebook	B-Application
feed	O
.	O
</s>
<s>
In	O
June	O
2015	O
,	O
Facebook	B-Application
gave	O
free	O
beacons	B-Protocol
to	O
a	O
number	O
of	O
businesses	O
in	O
the	O
United	O
States	O
.	O
</s>
