<s>
HP	B-Application
Open	I-Application
Extensibility	I-Application
Platform	I-Application
(	O
HP	O
OXP	O
)	O
,	O
developed	O
by	O
Hewlett-Packard	O
Co.	O
,	O
is	O
an	O
enterprise	O
software	O
development	O
platform	O
that	O
consists	O
of	O
three	O
unique	O
layers	O
.	O
</s>
<s>
The	O
device	O
layer	O
,	O
or	O
HP	O
OXPd	O
,	O
provides	O
a	O
software	B-Application
development	I-Application
kit	I-Application
(	O
SDK	O
)	O
for	O
creating	O
document	O
workflow	O
applications	O
based	O
on	O
standard	O
web	O
service	O
protocols	O
.	O
</s>
<s>
HP	O
OXPd	O
version	O
1.6	O
provides	O
a	O
development	O
platform	O
for	O
creating	O
web	B-Application
applications	I-Application
that	O
improve	O
document	O
workflows	O
.	O
</s>
<s>
These	O
web	B-Application
applications	I-Application
,	O
called	O
document	O
workflow	O
applications	O
,	O
typically	O
reside	O
on	O
remote	O
web	O
servers	O
and	O
users	O
access	O
them	O
via	O
the	O
device	O
control	O
panel	O
of	O
an	O
HP	O
LaserJet	O
MFP	O
or	O
HP	O
LaserJet	O
Flow	O
MFP	O
.	O
</s>
<s>
The	O
software	B-Application
development	I-Application
kit	I-Application
is	O
available	O
for	O
third-party	O
software	O
developers	O
that	O
qualify	O
for	O
the	O
HP	O
OXP	O
Developer	O
Program	O
.	O
</s>
<s>
HP	O
OXPd	O
is	O
intended	O
to	O
be	O
a	O
fleet-wide	O
SDK	O
(	O
software	B-Application
development	I-Application
kit	I-Application
)	O
that	O
provides	O
developers	O
access	O
to	O
a	O
consistent	O
set	O
of	O
device	O
services	O
APIs	B-General_Concept
used	O
to	O
develop	O
workflow	O
applications	O
that	O
support	O
scanning	O
,	O
printing	O
,	O
and	O
document	O
manipulation	O
.	O
</s>
<s>
HP	O
OXPd	O
supports	O
a	O
true	O
web	B-Application
application	I-Application
model	O
that	O
allows	O
the	O
application	O
logic	O
to	O
reside	O
on	O
a	O
remote	O
web	O
server	O
and	O
invoke	O
device	O
service	O
APIs	B-General_Concept
while	O
delivering	O
an	O
interactive	O
user	O
interface	O
on	O
device	O
control	O
panels	O
.	O
</s>
<s>
This	O
decoupled	O
device	O
user	O
interface	O
is	O
made	O
possible	O
with	O
embedded	O
device	O
web	B-Application
browser	I-Application
technology	O
which	O
provides	O
a	O
rich	O
user	O
experience	O
using	O
standard	O
web	O
protocols	O
like	O
XHTML	B-Language
,	O
JavaScript	B-Language
,	O
and	O
AJAX	B-General_Concept
patterns	O
.	O
</s>
<s>
The	O
design	O
goals	O
for	O
HP	O
OXPd	O
include	O
creating	O
an	O
application	O
framework	O
that	O
facilitates	O
a	O
simple	O
method	O
for	O
web-based	B-Application
document	O
workflow	O
application	O
creation	O
while	O
simultaneously	O
reducing	O
device	O
specific	O
code	O
requirements	O
.	O
</s>
<s>
In	O
the	O
current	O
release	O
(	O
HP	O
OXPd	O
1.6	O
)	O
device	O
web	O
service	O
APIs	B-General_Concept
,	O
or	O
exposed	O
methods	O
,	O
include	O
UI	O
configuration	O
services	O
,	O
scan	O
services	O
,	O
USB	O
accessory	O
services	O
,	O
and	O
security	O
services	O
.	O
</s>
<s>
Web	B-Application
applications	I-Application
that	O
utilize	O
the	O
HP	O
OXPd	O
APIs	B-General_Concept
will	O
operate	O
consistently	O
across	O
a	O
wide	O
variety	O
of	O
HP	O
devices	O
.	O
</s>
<s>
In	O
HP	O
OXPd	O
,	O
this	O
is	O
referred	O
to	O
as	O
the	O
physical	O
viewpoint	O
and	O
shows	O
the	O
remote	O
web	B-Application
application	I-Application
as	O
the	O
client	O
and	O
the	O
HP	O
device	O
as	O
the	O
server	O
.	O
</s>
<s>
However	O
,	O
from	O
a	O
users	O
 '	O
,	O
or	O
logical	O
perspective	O
,	O
the	O
device	O
behaves	O
consistently	O
with	O
standard	O
client	O
technology	O
accessing	O
a	O
remote	O
server	O
web	B-Application
application	I-Application
via	O
a	O
standard	O
web	B-Application
browser	I-Application
.	O
</s>
<s>
Configuring	O
an	O
HP	O
OXPd	O
application	O
on	O
an	O
HP	O
LaserJet	O
(	O
Flow	O
)	O
MFP	O
requires	O
an	O
icon	O
or	O
button	O
for	O
the	O
top	O
level	O
menu	O
,	O
a	O
title	O
,	O
a	O
description	O
of	O
the	O
web	B-Application
application	I-Application
,	O
and	O
the	O
URL	O
of	O
the	O
web	B-Application
application	I-Application
.	O
</s>
<s>
When	O
users	O
press	O
the	O
menu	O
button	O
a	O
browser	B-Application
application	I-Application
is	O
launched	O
and	O
the	O
URL	O
is	O
retrieved	O
from	O
the	O
remote	O
web	O
server	O
and	O
displayed	O
on	O
the	O
device	O
control	O
panel	O
.	O
</s>
<s>
Users	O
interact	O
with	O
the	O
remote	O
web	B-Application
application	I-Application
via	O
a	O
dynamically	O
rich	O
touch-based	O
graphical	O
control	O
panel	O
.	O
</s>
<s>
HP	O
OXP	O
configuration	O
services	O
provide	O
web	B-Application
application	I-Application
developers	I-Application
a	O
method	O
for	O
configuring	O
the	O
browser-based	B-Application
control	O
panel	O
on	O
the	O
HP	O
OXP-enabled	O
device	O
.	O
</s>
<s>
HP	O
OXPd	O
scan	O
services	O
enable	O
a	O
web	B-Application
application	I-Application
to	O
control	O
the	O
HP	O
LaserJet	O
(	O
Flow	O
)	O
MFP	O
scanning	O
functions	O
remotely	O
.	O
</s>
<s>
Scan	O
job	O
tickets	O
contain	O
important	O
information	O
like	O
destination	O
(	O
http	B-Protocol
)	O
and	O
filename	O
,	O
optional	O
metadata	O
,	O
and	O
transmission	O
mode	O
.	O
</s>
<s>
HP	O
OXPd	O
1.6	O
USB	O
accessory	O
services	O
enable	O
remote	O
web	B-Application
applications	I-Application
with	O
the	O
ability	O
to	O
communicate	O
with	O
USB	O
accessories	O
physically	O
attached	O
to	O
HP	O
LaserJet	O
(	O
Flow	O
)	O
MFPs	O
.	O
</s>
<s>
An	O
important	O
feature	O
with	O
the	O
USB	O
accessory	O
services	O
is	O
the	O
ability	O
for	O
multiple	O
web	B-Application
applications	I-Application
to	O
share	O
USB	O
accessories	O
with	O
other	O
active	O
web	B-Application
applications	I-Application
.	O
</s>
<s>
Specifically	O
,	O
Secure	O
Sockets	O
Layer	O
(	O
SSL	O
)	O
is	O
employed	O
whenever	O
the	O
HTTP	B-Protocol
protocol	I-Protocol
is	O
used	O
.	O
</s>
<s>
This	O
is	O
also	O
known	O
as	O
HTTPS	B-Protocol
.	O
</s>
<s>
These	O
credentials	O
are	O
then	O
stored	O
in	O
an	O
HTTP	B-Protocol
header	O
and	O
forwarded	O
to	O
an	O
HP	O
OXPd	O
web	B-Application
application	I-Application
for	O
validation	O
.	O
</s>
<s>
Since	O
network	O
credentials	O
are	O
being	O
passed	O
via	O
the	O
HTTP	B-Protocol
header	O
,	O
HP	O
strongly	O
recommends	O
using	O
SSL	O
with	O
HTTP	B-Protocol
,	O
or	O
HTTPS	B-Protocol
.	O
</s>
