<s>
A	O
portable	B-Application
data	I-Application
terminal	I-Application
,	O
or	O
shortly	O
PDT	O
,	O
is	O
an	O
electronic	O
device	O
that	O
is	O
used	O
to	O
enter	O
or	O
retrieve	O
data	O
via	O
wireless	O
transmission	O
(	O
WLAN	B-Architecture
or	O
WWAN	B-General_Concept
)	O
.	O
</s>
<s>
They	O
have	O
also	O
been	O
called	O
enterprise	B-Application
digital	I-Application
assistants	I-Application
(	O
EDA	O
)	O
,	O
data	B-General_Concept
capture	I-General_Concept
mobile	O
devices	O
,	O
batch	O
terminals	B-General_Concept
or	O
just	O
portables	O
.	O
</s>
<s>
They	O
can	O
also	O
serve	O
as	O
barcode	B-Device
readers	I-Device
,	O
and	O
they	O
are	O
used	O
in	O
large	O
stores	O
,	O
warehouses	O
,	O
hospitals	O
,	O
or	O
in	O
the	O
field	O
,	O
to	O
access	O
a	O
database	O
from	O
a	O
remote	O
location	O
.	O
</s>
<s>
Others	O
have	O
a	O
touch	O
screen	O
,	O
IrDA	O
,	O
Bluetooth	O
,	O
a	O
memory	O
card	O
slot	O
,	O
or	O
one	O
or	O
more	O
data	B-General_Concept
capture	I-General_Concept
devices	O
.	O
</s>
<s>
PDT	O
's	O
frequently	O
run	O
wireless	O
device	O
management	O
software	O
that	O
allows	O
them	O
to	O
interact	O
with	O
a	O
database	O
or	O
software	B-Application
application	I-Application
hosted	O
on	O
a	O
server	B-Application
or	O
mainframe	B-Architecture
computer	I-Architecture
.	O
</s>
<s>
Boundaries	O
among	O
PDA	B-Application
,	O
smartphone	B-Application
and	O
EDA	O
can	O
be	O
blurred	O
when	O
comparing	O
the	O
wide	O
array	O
of	O
common	O
features	O
and	O
functions	O
.	O
</s>
<s>
a	O
Barcode	O
or	O
RFID	B-Application
Reader	O
etc	O
.	O
</s>
