<s>
Zeo	O
,	O
Inc.	O
,	O
formerly	O
Axon	B-Device
Labs	I-Device
,	O
was	O
a	O
private	O
company	O
founded	O
by	O
Brown	O
University	O
students	O
.	O
</s>
<s>
The	O
state	O
of	O
sleep	O
was	O
detected	O
by	O
a	O
headband	O
,	O
essentially	O
comprising	O
three	O
long-lasting	O
electrodes	O
made	O
of	O
electrically	O
conductive	O
fabric	O
and	O
a	O
wireless	O
unit	O
,	O
that	O
transmitted	O
data	O
to	O
a	O
Zeo	O
bedside	O
clock	O
unit	O
or	O
Apple	B-Operating_System
iPhone	I-Operating_System
which	O
displayed	O
data	O
and	O
sounded	O
the	O
wake	O
alarm	O
.	O
</s>
<s>
The	O
Web	O
site	O
initially	O
became	O
inaccessible	O
,	O
Twitter	B-Application
tweets	O
stopped	O
and	O
the	O
Zeo	O
Community	O
Forum	O
became	O
'	O
currently	O
unavailable	O
and	O
down	O
for	O
maintenance	O
 '	O
.	O
</s>
<s>
The	O
proprietary	O
headband	O
,	O
which	O
was	O
recommend	O
to	O
be	O
replaced	O
about	O
every	O
three	O
months	O
,	O
is	O
no	O
longer	O
available	O
from	O
Zeo	B-Device
,	I-Device
Inc	I-Device
.	I-Device
</s>
<s>
Users	O
had	O
reported	O
before	O
the	O
company	O
closed	O
that	O
disposable	O
adhesive	O
gel	O
ECG	B-Application
electrodes	O
with	O
offset	O
press-stud	O
connections	O
worked	O
successfully	O
,	O
better	O
than	O
the	O
Zeo	O
headband	O
.	O
</s>
<s>
During	O
the	O
company	O
's	O
existence	O
ZeoScope	O
software	O
using	O
the	O
decoder	O
library	O
,	O
which	O
allowed	O
the	O
Zeo	O
to	O
be	O
used	O
as	O
a	O
biofeedback	O
device	O
with	O
EEG	B-Application
display	O
and	O
functionality	O
related	O
to	O
lucid	O
dreaming	O
,	O
had	O
been	O
written	O
by	O
an	O
independent	O
developer	O
and	O
distributed	O
without	O
charge	O
under	O
the	O
Apache	B-Application
licence	I-Application
;	O
it	O
did	O
not	O
use	O
facilities	O
of	O
the	O
Zeo	O
Web	O
site	O
,	O
and	O
continued	O
to	O
work	O
after	O
the	O
company	O
closed	O
.	O
</s>
