<s>
KeyFly	B-Device
is	O
a	O
conditional	B-Architecture
access	I-Architecture
(	O
CA	O
)	O
system	O
developed	O
by	O
SIDSA	O
which	O
is	O
compatible	O
with	O
the	O
DVB-CSA	B-Application
platform	O
.	O
</s>
<s>
The	O
system	O
is	O
based	O
on	O
SIDSA	O
MACtsp	O
processors	O
,	O
and	O
conditional-access	B-Device
modules	I-Device
for	O
it	O
can	O
integrate	O
the	O
card	O
directly	O
into	O
the	O
CAM	O
.	O
</s>
<s>
KeyFly	B-Device
is	O
a	O
platform	O
for	O
digital	B-Application
television	I-Application
.	O
</s>
<s>
The	O
platform	O
has	O
been	O
created	O
to	O
meet	O
new	O
requirements	O
and	O
challenges	O
of	O
digital	B-Application
television	I-Application
,	O
going	O
further	O
than	O
traditional	O
subscription	O
payment	O
systems	O
,	O
incorporating	O
more	O
flexible	O
business	O
models	O
with	O
no	O
need	O
for	O
permanent	O
subscriptions	O
,	O
value-added	O
services	O
to	O
free	O
TV	O
,	O
as	O
well	O
as	O
new	O
payment	O
techniques	O
via	O
mobile	O
phones	O
.	O
</s>
<s>
KeyFly	B-Device
allows	O
different	O
options	O
such	O
as	O
with	O
or	O
without	O
smart	O
card	O
,	O
CAS	O
embedded	O
into	O
set-top	O
box	O
or	O
into	O
Common	B-Device
Interface	I-Device
CAMs	O
,	O
with	O
or	O
without	O
need	O
for	O
subscription	O
.	O
</s>
<s>
KeyFly	B-Device
supports	O
different	O
methods	O
for	O
rights	O
management	O
from	O
traditional	O
pay-TV	O
Systems	O
to	O
Free	O
TV	O
with	O
new	O
value-added	O
services	O
.	O
</s>
<s>
KeyFly	B-Device
provides	O
for	O
impulse-purchase	O
of	O
pay-per-view	O
events	O
or	O
subscription	O
periods	O
,	O
which	O
can	O
be	O
paid	O
for	O
via	O
SMS	B-Device
or	O
the	O
internet	O
.	O
</s>
<s>
A	O
number	O
of	O
channels	O
on	O
Hotbird	O
including	O
InXtc	O
,	O
247	O
Sex	O
TV	O
,	O
Sex	O
Asians	O
and	O
SuperSex	O
TV	O
use	O
KeyFly	B-Device
as	O
one	O
of	O
their	O
encryption	O
formats	O
.	O
</s>
