<s>
Windows	B-Application
CardSpace	I-Application
(	O
codenamed	O
InfoCard	B-Application
)	O
is	O
a	O
discontinued	O
identity	B-Application
selector	I-Application
app	O
by	O
Microsoft	O
.	O
</s>
<s>
It	O
stores	O
references	O
to	O
digital	B-Application
identities	I-Application
of	O
the	O
users	O
,	O
presenting	O
them	O
as	O
visual	O
information	B-Application
cards	I-Application
.	O
</s>
<s>
CardSpace	B-Application
provides	O
a	O
consistent	O
UI	B-Application
designed	O
to	O
help	O
people	O
to	O
easily	O
and	O
securely	O
use	O
these	O
identities	O
in	O
applications	O
and	O
web	O
sites	O
where	O
they	O
are	O
accepted	O
.	O
</s>
<s>
CardSpace	B-Application
is	O
a	O
built-in	O
component	O
of	O
Windows	B-Device
7	I-Device
,	O
and	O
has	O
been	O
made	O
available	O
for	O
Windows	B-Application
XP	I-Application
,	O
Windows	B-Application
Server	I-Application
2003	I-Application
,	O
and	O
Windows	B-Application
Vista	I-Application
as	O
part	O
of	O
the	O
.NET	B-Application
Framework	I-Application
3.x	O
package	O
.	O
</s>
<s>
The	O
CardSpace	B-Application
UI	B-Application
then	O
appears	O
,	O
switching	O
the	O
display	O
to	O
the	O
CardSpace	B-Application
service	O
,	O
which	O
displays	O
the	O
user	O
's	O
stored	O
identities	O
as	O
visual	O
cards	O
.	O
</s>
<s>
The	O
user	O
selects	O
a	O
card	O
to	O
use	O
,	O
and	O
the	O
CardSpace	B-Application
software	O
contacts	O
the	O
issuer	O
of	O
the	O
identity	O
to	O
obtain	O
a	O
digitally	O
signed	O
XML	B-Protocol
token	O
that	O
contains	O
the	O
requested	O
information	O
.	O
</s>
<s>
CardSpace	B-Application
also	O
allows	O
users	O
to	O
create	O
personal	O
(	O
also	O
known	O
as	O
self-issued	O
)	O
information	B-Application
cards	I-Application
,	O
which	O
can	O
contain	O
one	O
or	O
more	O
of	O
14	O
fields	O
of	O
identity	O
information	O
such	O
as	O
full	O
name	O
and	O
address	O
.	O
</s>
<s>
Other	O
transactions	O
may	O
require	O
a	O
managed	O
information	B-Application
card	I-Application
;	O
these	O
are	O
issued	O
by	O
a	O
third-party	O
identity	O
provider	O
that	O
makes	O
the	O
claims	O
on	O
the	O
person	O
's	O
behalf	O
,	O
such	O
as	O
a	O
bank	O
,	O
employer	O
,	O
or	O
a	O
government	O
agency	O
.	O
</s>
<s>
Windows	B-Application
CardSpace	I-Application
is	O
built	O
on	O
top	O
of	O
the	O
Web	O
services	O
protocol	O
stack	O
,	O
an	O
open	O
set	O
of	O
XML-based	O
protocols	O
,	O
including	O
WS-Security	O
,	O
WS-Trust	O
,	O
WS-MetadataExchange	O
and	O
WS-SecurityPolicy	O
.	O
</s>
<s>
This	O
means	O
that	O
any	O
technology	O
or	O
platform	O
that	O
supports	O
these	O
protocols	O
can	O
integrate	O
with	O
CardSpace	B-Application
.	O
</s>
<s>
To	O
accept	O
information	B-Application
cards	I-Application
,	O
a	O
web	B-Operating_System
developer	I-Operating_System
needs	O
to	O
declare	O
an	O
HTML	B-Language
<OBJECT>	O
tag	O
that	O
specifies	O
the	O
claims	O
the	O
website	O
is	O
demanding	O
and	O
implement	O
code	O
to	O
decrypt	O
the	O
returned	O
token	O
and	O
extract	O
the	O
claim	O
values	O
.	O
</s>
<s>
Because	O
CardSpace	B-Application
and	O
the	O
identity	B-Application
metasystem	I-Application
upon	O
which	O
it	O
is	O
based	O
are	O
token-format-agnostic	O
,	O
CardSpace	B-Application
did	O
not	O
compete	O
directly	O
with	O
other	O
Internet	O
identity	O
architectures	O
like	O
OpenID	O
and	O
SAML	O
.	O
</s>
<s>
These	O
three	O
approaches	O
to	O
identity	O
can	O
be	O
seen	O
as	O
complementary	O
,	O
because	O
during	O
the	O
2000s	O
,	O
information	B-Application
cards	I-Application
could	O
be	O
used	O
today	O
for	O
signing	O
into	O
OpenID	O
providers	O
,	O
Windows	O
Live	O
ID	O
accounts	O
,	O
and	O
SAML	O
identity	O
providers	O
.	O
</s>
<s>
IBM	O
and	O
Novell	O
planned	O
to	O
support	O
the	O
Higgins	B-Language
trust	I-Language
framework	I-Language
to	O
provide	O
a	O
development	O
framework	O
that	O
includes	O
support	O
for	O
information	B-Application
cards	I-Application
and	O
the	O
Web	O
services	O
protocol	O
stack	O
,	O
thus	O
including	O
CardSpace	B-Application
within	O
a	O
broader	O
,	O
extensible	O
framework	O
also	O
supporting	O
other	O
identity-related	O
technologies	O
,	O
such	O
as	O
SAML	O
and	O
OpenID	O
.	O
</s>
<s>
Microsoft	O
initially	O
shipped	O
Windows	B-Application
CardSpace	I-Application
with	O
the	O
.NET	B-Application
Framework	I-Application
3.0	O
,	O
which	O
runs	O
on	O
Windows	B-Application
XP	I-Application
,	O
Windows	B-Application
Server	I-Application
2003	I-Application
,	O
and	O
Windows	B-Application
Vista	I-Application
.	O
</s>
<s>
It	O
is	O
installed	O
by	O
default	O
on	O
Windows	B-Application
Vista	I-Application
as	O
well	O
as	O
Windows	B-Device
7	I-Device
and	O
is	O
available	O
as	O
a	O
free	O
download	O
for	O
XP	B-Application
and	O
Server	O
2003	O
via	O
Windows	O
Update	O
.	O
</s>
<s>
An	O
updated	O
version	O
of	O
CardSpace	B-Application
shipped	O
with	O
the	O
.NET	B-Application
Framework	I-Application
3.5	O
.	O
</s>
<s>
The	O
new	O
Credential	O
Manager	O
in	O
Windows	B-Device
7	I-Device
uses	O
Windows	B-Application
CardSpace	I-Application
for	O
the	O
management	O
and	O
storage	O
of	O
saved	O
user	O
credentials	O
.	O
</s>
<s>
On	O
February	O
15	O
,	O
2011	O
,	O
Microsoft	O
announced	O
that	O
Windows	B-Application
CardSpace	I-Application
2.0	O
would	O
not	O
be	O
shipped	O
.	O
</s>
<s>
Microsoft	O
later	O
worked	O
on	O
a	O
replacement	O
called	O
U-Prove	B-Application
.	O
</s>
