<s>
The	O
ucode	B-Application
system	I-Application
(	O
written	O
in	O
lower	O
case	O
"	O
ucode	O
"	O
)	O
is	O
an	O
identification	O
number	O
system	O
that	O
can	O
be	O
used	O
to	O
identify	O
things	O
in	O
the	O
real	O
world	O
uniquely	O
.	O
</s>
<s>
Unique	O
identification	O
system	O
for	O
real	O
world	O
objects	O
is	O
considered	O
an	O
essential	O
enabler	O
for	O
the	O
realisation	O
of	O
Internet	B-Operating_System
of	I-Operating_System
Things	I-Operating_System
and	O
therefore	O
ucode	B-Application
system	I-Application
is	O
seen	O
as	O
a	O
building	O
block	O
for	O
Internet	B-Operating_System
of	I-Operating_System
Things	I-Operating_System
.	O
</s>
<s>
The	O
ucode	B-Application
system	I-Application
uses	O
128	O
bit	O
code	O
for	O
unique	O
naming	O
of	O
things	O
,	O
so	O
there	O
are	O
340282366920938463463374607431768211455	O
or	O
3.4	O
x	O
10^38	O
different	O
codes	O
.	O
</s>
<s>
RFID	B-Application
,	O
barcode	O
or	O
matrix	O
code	O
.	O
</s>
<s>
The	O
Chairman	O
of	O
the	O
uID	O
Center	O
is	O
Professor	O
Ken	B-Algorithm
Sakamura	I-Algorithm
who	O
is	O
also	O
the	O
person	O
behind	O
ucode	O
.	O
</s>
<s>
Ubiquitous	O
ID	O
system	O
consists	O
of	O
five	O
components	O
:	O
(	O
1	O
)	O
ucode	O
,	O
(	O
2	O
)	O
ucode	O
tag	O
,	O
(	O
3	O
)	O
ubiquitous	B-Algorithm
communicator	I-Algorithm
,	O
(	O
4	O
)	O
ucode	O
resolution	O
server	O
and	O
(	O
5	O
)	O
ucode	O
information	O
server	O
.	O
</s>
<s>
Finally	O
,	O
the	O
ubiquitous	B-Algorithm
communicator	I-Algorithm
connects	O
to	O
the	O
information	O
provision	O
source	O
and	O
acquires	O
contents	O
and	O
services	O
.	O
</s>
<s>
The	O
ucode	O
server	O
architecture	O
is	O
similar	O
to	O
the	O
familiar	O
Internet	B-Protocol
DNS	I-Protocol
resolution	O
service	O
.	O
</s>
<s>
Like	O
DNS	B-Protocol
,	O
the	O
ucode	O
resolution	O
mechanism	O
consists	O
of	O
hierarchical	O
levels	O
.	O
</s>
<s>
A	O
special	O
sub-section	O
of	O
RFID	B-Application
tags	I-Application
are	O
NFC	O
tags	O
,	O
which	O
can	O
contain	O
ucode	O
.	O
</s>
<s>
UID	O
Center	O
has	O
certified	O
a	O
46	O
differenrf	O
ucode	O
tags	O
,	O
the	O
first	O
ones	O
in	O
2003	O
were	O
barcodes	O
made	O
by	O
Sato	O
corporation	O
,	O
Toppan	O
Forms	O
Inc	O
.	O
and	O
Dai	O
Nippon	O
Printing	O
Co.	O
,	O
later	O
on	O
two	O
dimensional	O
matrix	O
codes	O
were	O
introduced	O
,	O
followed	O
by	O
hologram	O
implementation	O
and	O
several	O
RFID	B-Application
tags	I-Application
,	O
often	O
compliant	O
with	O
ISO/IEC15693	O
standard	O
and	O
using	O
frequency	O
band	O
13.56MHz	O
.	O
</s>
<s>
The	O
EPC	O
(	O
Electronic	O
Product	O
Code	O
)	O
relies	O
on	O
RFID	B-Application
tags	I-Application
for	O
object	O
identification	O
.	O
</s>
