<s>
An	O
online	B-Application
pass	I-Application
is	O
a	O
digital	O
rights	O
management	O
system	O
for	O
restricting	O
access	O
to	O
supplemental	O
functionality	O
in	O
a	O
product	O
by	O
using	O
a	O
single-use	O
serial	O
number	O
.	O
</s>
<s>
If	O
a	O
player	O
does	O
not	O
have	O
an	O
unused	O
online	B-Application
pass	I-Application
(	O
such	O
as	O
when	O
buying	O
a	O
used	O
game	O
)	O
,	O
the	O
player	O
can	O
either	O
purchase	O
access	O
via	O
their	O
console	O
or	O
can	O
access	O
a	O
limited	O
trial	O
of	O
the	O
game	O
's	O
online	O
content	O
.	O
</s>
<s>
In	O
some	O
cases	O
,	O
a	O
game	O
may	O
similarly	O
come	O
with	O
a	O
code	O
that	O
can	O
be	O
redeemed	O
for	O
free	O
downloadable	B-Protocol
content	I-Protocol
and	O
other	O
items	O
released	O
upon	O
or	O
shortly	O
after	O
the	O
game	O
's	O
launch	O
,	O
such	O
as	O
The	O
Stone	O
Prisoner	O
DLC	B-Protocol
and	O
the	O
Blood	O
Dragon	O
armor	O
set	O
for	O
Dragon	B-Application
Age	I-Application
Origins	I-Application
,	O
the	O
House	O
of	O
Valor	O
quest	O
for	O
Kingdoms	B-Application
of	I-Application
Amalur	I-Application
:	I-Application
Reckoning	I-Application
,	O
and	O
a	O
package	O
of	O
20	O
additional	O
songs	O
for	O
Rock	B-Application
Band	I-Application
2	I-Application
.	O
</s>
<s>
Alongside	O
downloadable	B-Protocol
content	I-Protocol
,	O
online	O
passes	O
add	O
an	O
additional	O
revenue	O
stream	O
which	O
can	O
be	O
used	O
to	O
make	O
up	O
for	O
profits	O
lost	O
through	O
second-hand	O
sales	O
,	O
and	O
encourage	O
players	O
to	O
buy	O
games	O
new	O
at	O
retail	O
so	O
they	O
do	O
not	O
have	O
to	O
pay	O
extra	O
to	O
access	O
the	O
game	O
's	O
full	O
content	O
.	O
</s>
<s>
Opponents	O
contend	O
that	O
adoption	O
of	O
online	B-Application
pass	I-Application
systems	O
may	O
lead	O
to	O
removing	O
more	O
essential	O
functionality	O
from	O
used	O
games	O
and	O
possibly	O
even	O
preventing	O
the	O
resale	O
of	O
video	O
games	O
.	O
</s>
<s>
38	O
Studios	O
founder	O
Curt	O
Schilling	O
justified	O
the	O
use	O
of	O
an	O
online	B-Application
pass	I-Application
to	O
unlock	O
the	O
seven-part	O
bonus	O
quest	O
"	O
House	O
of	O
Valor	O
"	O
on	O
the	O
single-player	O
RPG	O
Kingdoms	B-Application
of	I-Application
Amalur	I-Application
:	I-Application
Reckoning	I-Application
(	O
which	O
was	O
published	O
by	O
EA	O
)	O
as	O
"	O
day	O
one	O
DLC	B-Protocol
"	O
intended	O
as	O
an	O
incentive	O
for	O
early	O
adopters	O
.	O
</s>
<s>
Among	O
the	O
first	O
video	O
games	O
to	O
require	O
an	O
online	B-Application
pass	I-Application
was	O
SOCOM	B-Application
U.S.	I-Application
Navy	I-Application
SEALs	I-Application
:	I-Application
Fireteam	I-Application
Bravo	I-Application
3	I-Application
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
,	O
which	O
required	O
the	O
use	O
of	O
a	O
one-time	O
voucher	O
included	O
in	O
retail	O
copies	O
of	O
the	O
game	O
to	O
access	O
multiplayer	O
modes	O
,	O
charging	O
$20	O
for	O
replacements	O
.	O
</s>
<s>
In	O
late	O
2009	O
,	O
EA	O
began	O
implementing	O
online	O
passes	O
in	O
its	O
games	O
as	O
part	O
of	O
an	O
initiative	O
known	O
as	O
"	O
Project	O
Ten	O
Dollar	O
"	O
;	O
Mass	B-Application
Effect	I-Application
2	I-Application
used	O
an	O
online	B-Application
pass	I-Application
to	O
allow	O
access	O
to	O
bonus	O
content	O
through	O
its	O
"	O
Cerberus	O
Network	O
"	O
system	O
,	O
while	O
Dragon	B-Application
Age	I-Application
Origins	I-Application
came	O
with	O
a	O
code	O
that	O
could	O
be	O
redeemed	O
to	O
download	O
its	O
first	O
major	O
DLC	B-Protocol
release	O
,	O
The	O
Stone	O
Prisoner	O
,	O
for	O
free	O
,	O
as	O
well	O
as	O
an	O
exclusive	O
armor	O
set	O
.	O
</s>
<s>
In	O
May	O
2010	O
,	O
EA	O
announced	O
that	O
beginning	O
with	O
Tiger	B-Application
Woods	I-Application
PGA	I-Application
Tour	I-Application
10	I-Application
,	O
all	O
future	O
EA	O
Sports	O
titles	O
would	O
require	O
the	O
use	O
of	O
online	O
passes	O
to	O
access	O
multiplayer	O
.	O
</s>
<s>
In	O
mid-2013	O
,	O
many	O
publishers	O
began	O
to	O
phase	O
out	O
online	O
passes	O
;	O
in	O
May	O
2013	O
,	O
Electronic	O
Arts	O
announced	O
it	O
would	O
,	O
due	O
to	O
customer	O
feedback	O
,	O
discontinue	O
its	O
future	O
use	O
of	O
online	O
passes	O
in	O
upcoming	O
titles	O
,	O
and	O
retroactively	O
remove	O
the	O
online	B-Application
pass	I-Application
requirements	O
from	O
existing	O
titles	O
.	O
</s>
<s>
On	O
November	O
1	O
,	O
2013	O
,	O
Ubisoft	O
followed	O
suit	O
by	O
discontinuing	O
its	O
Uplay	B-Application
Passport	I-Application
system	O
for	O
future	O
titles	O
,	O
and	O
making	O
the	O
pass	O
for	O
its	O
recently	O
released	O
Assassin	B-Application
’s	I-Application
Creed	I-Application
IV	I-Application
:	I-Application
Black	I-Application
Flag	I-Application
available	O
at	O
no	O
charge	O
.	O
</s>
<s>
Sony	O
specifically	O
forbids	O
the	O
use	O
of	O
online	O
passes	O
by	O
developers	O
on	O
PlayStation	B-Operating_System
4	I-Operating_System
titles	O
;	O
as	O
users	O
must	O
have	O
a	O
PlayStation	O
Plus	O
subscription	O
to	O
use	O
online	O
multiplayer	O
on	O
most	O
PS4	B-Operating_System
games	O
,	O
Sony	O
did	O
not	O
want	O
publishers	O
to	O
add	O
additional	O
DRM	O
designed	O
to	O
charge	O
users	O
further	O
.	O
</s>
<s>
A	O
similar	O
system	O
has	O
been	O
recently	O
used	O
by	O
textbook	O
publishers	O
,	O
by	O
requiring	O
the	O
use	O
of	O
an	O
online	B-Application
pass	I-Application
to	O
offer	O
supplemental	O
content	O
;	O
including	O
an	O
online	O
message	O
board	O
,	O
an	O
assignment	O
system	O
where	O
homework	O
may	O
be	O
assigned	O
or	O
handed	O
in	O
,	O
or	O
even	O
an	O
e-book	O
version	O
of	O
the	O
title	O
.	O
</s>
