Ind
o
n
es
ian Jou
r
n
al
o
f
E
le
ctric
a
l E
n
g
in
ee
r
ing
and
C
o
mp
u
t
er
S
c
ienc
e
V
ol
. 8
,
No.
3
,
Dec
em
be
r
20
17
, p
p
.
6
51
~
6
53
DO
I: 1
0.
11
5
91
/
i
j
ee
c
s
.v
8
.i
3
.
pp
65
1
-
65
3
6
51
Rec
ei
v
ed
A
ug
us
t
1
0
,
20
1
7
;
Rev
i
s
ed
O
c
to
be
r
2
2,
2
01
7
;
A
c
c
ep
te
d
Nov
e
mb
er
1
3
,
2
01
7
NFC B
ased
Digi
tal In
no
v
a
tio
n T
echn
i
qu
e
to
Eli
min
a
te
Coin
S
ho
rt
age
Pr
ob
le
m
P
ar
ama
siv
am
E
.
,
D.
A
r
iv
a
z
h
agan
Dep
a
rtm
e
n
t
o
f
In
f
o
rm
a
ti
o
n
T
e
c
h
n
o
l
o
g
y
,
AM
E
T
Un
i
v
e
rs
i
ty
,
Ch
e
n
n
a
i
,
In
d
i
a
Ab
strac
t
In
d
i
a
h
a
s
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n
i
s
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e
wit
h
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tt
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h
a
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n
Re
s
ta
u
r
a
n
ts
,
Au
t
o
-
Ta
x
i
d
r
i
v
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rs
,
Ret
a
i
l
S
h
o
p
s
,
Pu
b
l
i
c
Bu
s
s
e
s
,
a
n
d
M
a
rk
e
ts
whe
r
e
v
e
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n
d
i
v
i
d
u
a
l
s
e
x
p
e
ri
e
n
c
e
th
e
i
l
l
e
ff
e
c
ts
o
f
c
o
i
n
l
a
c
k
i
s
s
u
e
.
Ye
t
a
t
th
e
s
a
m
e
ti
m
e
,
th
e
r
e
g
u
l
a
r
m
a
n
c
o
n
fro
n
ts
l
a
c
k
o
f
p
ro
g
r
e
s
s
a
n
d
fre
q
u
e
n
tl
y
b
e
i
n
g
p
a
i
d
i
n
é
c
l
a
i
r
s
,
m
i
n
ts
a
n
d
b
i
ti
n
g
g
u
m
s
.
Th
i
s
v
e
n
tu
r
e
p
ro
p
o
s
e
s
a
n
i
n
v
e
n
ti
v
e
a
rr
a
n
g
e
m
e
n
t
c
a
l
l
e
d
B
y
te
-
CO
IN;
to
ta
k
e
c
a
re
o
f
th
e
c
o
i
n
l
a
c
k
i
s
s
u
e
th
a
t
we
a
re
c
o
n
fr
o
n
t
i
n
o
u
r
n
a
ti
o
n
.
Th
e
a
rr
a
n
g
e
m
e
n
t
i
n
c
l
u
d
e
d
a
s
e
c
u
re
d
a
d
v
a
n
c
e
d
p
a
y
m
e
n
t
fra
m
e
work
t
h
a
t
h
a
s
re
a
s
o
n
a
s
s
e
m
b
l
e
d
m
a
rg
i
n
s
o
n
th
e
s
u
m
re
q
u
i
re
d
i
n
th
e
e
x
c
h
a
n
g
e
.
Ev
e
ry
e
x
c
h
a
n
g
e
i
n
c
l
u
d
e
s
t
h
e
s
u
p
p
o
rt
o
f
th
e
v
e
n
d
o
r a
n
d
c
u
s
to
m
e
r.
In
s
p
i
te
o
f
t
h
e
f
a
c
t
th
a
t
th
e
re
i
s
n
o
i
n
s
ta
n
t
c
o
n
t
a
c
t
wit
h
t
h
e
b
a
n
k
a
t
th
e
ti
m
e
o
f
y
e
a
r
o
f
e
x
c
h
a
n
g
e
,
a
b
a
s
e
s
u
p
p
o
rt
o
f
b
a
n
k
s
i
s
i
m
p
o
rta
n
t
to
e
ff
e
c
ti
v
e
l
y
e
x
e
c
u
te
th
i
s
.
Th
e
re
i
s
n
o
n
e
e
d
o
f
a
we
b
a
s
s
o
c
i
a
ti
o
n
,
i
n
t
h
i
s
wa
y
m
a
k
i
n
g
i
t
a
v
a
i
l
a
b
l
e
t
o
a
l
l
a
s
p
e
c
ts
o
f
t
h
e
n
a
ti
o
n
.
Key
w
ords
:
By
t
e
,
Co
i
n
,
RBI,
N
FC,
ARM
Co
rte
x
M
-
3
Copy
righ
t
©
2
0
1
7
I
ns
titu
t
e
o
f
Adv
a
nc
e
d
Eng
i
ne
e
ring
a
nd
Sc
ie
nc
e
.
All
righ
t
s
re
s
e
rve
d.
1.
Int
r
o
d
u
ctio
n
RB
I s
u
pp
l
i
es
bi
l
l
i
on
s
of
c
oi
n
s
ea
c
h
y
ea
r
i
n
di
f
f
erent d
i
v
i
s
i
on
s
c
r
os
s
wi
s
e o
v
er I
nd
i
a.
Y
et
at
the
s
am
e
ti
m
e,
the
r
eg
ul
ar
m
an
c
on
f
r
on
ts
l
ac
k
of
progr
es
s
an
d
f
r
eq
u
en
t
l
y
be
i
n
g
pa
i
d
i
n
éc
l
a
i
r
s
,
m
i
nts
an
d
bi
t
i
n
g
gu
m
s
[1]
.
T
he
c
l
i
en
t
ne
e
ds
to
ha
v
e
a
n
af
f
i
r
m
ed
B
y
t
e
-
CO
I
N
c
ard.
E
v
er
y
r
e
tai
l
er
an
d
bu
s
i
ne
s
s
pe
r
s
on
o
ug
h
t
to
c
l
ai
m
a
B
y
t
e
-
CO
IN
ga
dg
et.
It
ha
s
a
c
ou
p
l
e
of
k
e
y
r
ea
s
o
n
f
ab
r
i
c
ate
d
c
o
ns
tr
ai
n
ts
.
E
ac
h
c
ard
c
an
ho
l
d
a
m
os
t
ex
tr
em
e
of
j
us
t
20
0
Rs
.
E
v
er
y
ga
d
ge
t
ha
s
a
m
o
s
t
ex
tr
e
m
e
da
y
b
y
d
a
y
po
i
nt
of
c
on
f
i
ne
m
en
t
of
20
0
00
Rs
[2]
.
A
n
y
s
i
ng
l
e
c
oi
n
ex
c
ha
ng
e
c
an
j
us
t
ex
c
ha
ng
e
a
s
um
i
n
th
e
v
i
c
i
ni
t
y
of
1
a
nd
9
Rs
.
T
he
c
ard
s
tores
s
ub
t
l
e
el
em
en
ts
l
i
k
e
th
e
c
l
i
en
t
tel
e
ph
o
ne
nu
m
be
r
, n
am
e,
ad
j
us
t s
um
an
d a
protec
t
ed
k
e
y
.
T
he
pe
r
us
er
ha
s
a
do
ub
l
e
s
ho
w
s
c
r
ee
n
,
th
e
r
et
ai
l
er
s
i
de
on
e
i
s
a
G
UI
i
n
l
i
g
ht
of
tou
c
h
s
c
r
ee
n
T
F
T
s
ho
w
s
ort
w
h
i
l
e
t
he
c
l
i
en
t
c
e
ntred
on
e
i
s
r
ep
r
es
en
ta
ti
on
s
h
o
w
s
ort
[3]
.
B
oth
the
s
ho
w
c
arr
i
es
on
k
ee
n
i
n
i
nd
i
c
ati
ng
j
us
t
the
i
m
po
r
tan
t
d
a
ta
as
pe
r
the
w
a
tc
he
r
.
Ret
ai
l
er
s
i
de
s
ho
w
de
pe
nd
a
bl
y
d
em
on
s
tr
ate
s
th
e p
r
es
e
nt
a
d
j
us
t o
n
the
r
e
t
ai
l
er ga
dg
e
t.
A
r
eta
i
l
er
m
us
t
tak
e
hi
s
B
y
t
e
-
CO
IN
ga
d
ge
t
to
t
he
b
an
k
to
en
erg
i
z
e
wi
th
t
he
c
ov
e
te
d
s
u
m
.
O
n
ac
c
ep
ti
ng
the
s
u
m
f
r
o
m
the
r
eta
i
l
er,
a
ba
nk
c
l
erk
c
an
as
s
oc
i
ate
the
ga
d
ge
t
to
the
b
an
k
m
a
c
hi
ne
ut
i
l
i
z
i
n
g
US
B
l
i
nk
an
d
ex
c
ha
n
ge
th
e
c
ov
e
ted
r
ev
i
v
e
s
um
[4]
.
T
he
ba
nk
wi
l
l
k
ee
p
up
a
da
ta
ba
s
e
of
the
g
ad
g
ets
i
s
s
ue
d;
ac
c
ordi
ng
l
y
t
he
ga
dg
et
w
i
l
l
be
n
atu
r
a
l
l
y
c
he
c
k
ed
f
or
i
ts
v
a
l
i
d
ne
s
s
.
S
urv
e
y
on
e
nc
r
y
pti
o
n
tec
h
ni
qu
es
us
e
d
to
s
ec
ure
c
l
ou
d
s
tora
ge
s
y
s
t
e
m
i
s
di
s
c
us
s
ed
i
n [
5].
A
na
l
y
s
i
s
of
c
l
ou
d
c
o
m
pu
ti
ng
te
c
h
no
l
og
y
i
s
ex
pl
ai
n
ed
i
n [
6].
2.
P
r
o
p
o
se
d
M
eth
o
d
o
log
i
es
T
hi
s
v
en
t
ure
pro
po
s
es
a
n
i
m
ag
i
na
t
i
v
e
arr
an
ge
m
en
t
c
al
l
ed
B
y
te
-
CO
IN,
to
t
ak
e
c
are
of
ev
er
y
ex
c
ha
ng
e
i
nc
l
u
de
s
th
e
s
up
p
ort
of
th
e
m
erc
ha
nt
an
d
s
h
op
p
er.
In
s
pi
t
e
of
th
e
f
ac
t
tha
t
t
he
r
e
i
s
no
s
tr
a
i
g
ht
m
a
k
i
ng
c
on
t
ac
t
w
i
t
h
th
e
b
an
k
at
th
e
p
erio
d
of
ex
c
ha
ng
e,
a
b
as
e
s
i
gn
i
f
i
c
an
c
e
of
ba
nk
s
i
s
m
ai
n
to
ef
f
i
c
i
en
t
l
y
pe
r
f
or
m
thi
s
.
Ma
j
or
pa
r
t
o
f
w
eb
as
s
oc
i
ati
on
,
i
n
t
hi
s
wa
y
c
r
ea
ti
o
n
i
t
op
en
to
al
l
f
ea
tures
of
th
e n
ati
o
n.
Evaluation Warning : The document was created with Spire.PDF for Python.
IS
S
N:
25
02
-
4
75
2
IJE
E
CS
V
ol
.
8
,
N
o.3
,
Dec
e
m
be
r
2017
:
6
51
–
65
3
652
F
i
gu
r
e
1.
B
l
oc
k
di
a
gram
of
b
y
t
e c
o
in
2.1.
NF
C
T
he
en
ti
r
e
pa
y
m
en
t
proc
e
s
s
i
s
c
arr
i
ed
ov
er
NF
C,
whi
c
h
i
s
a
s
ec
ure
an
d
un
i
v
ers
al
c
on
tac
tl
es
s
c
o
m
m
un
i
c
ati
o
n
tec
hn
o
l
o
g
y
ev
ol
v
e
d
f
r
o
m
RF
ID.
It
op
erat
es
i
n
the
1
3.5
6
MH
z
r
ad
i
o
f
r
eq
ue
nc
y
ba
nd
an
d
th
e
c
o
m
m
un
i
c
ati
on
t
y
p
i
c
al
l
y
h
ap
p
en
s
at
1
0
c
m
or
l
es
s
er
d
i
s
t
an
c
e.
T
hu
s
t
he
tr
an
s
ac
ti
o
n
ha
pp
e
ns
when
the
t
w
o
de
v
i
c
es
are
a
t
v
e
r
y
c
l
os
e
prox
i
m
i
t
y
t
o
ea
c
h
oth
er.
A
NF
C
c
on
tr
ol
l
er
f
r
o
m
NX
P
s
e
m
i
c
on
du
c
t
or
i
s
us
ed
f
or
th
i
s
p
urpos
e.
T
he
c
ards
us
ed
i
n
thi
s
proj
ec
t
are
s
tan
da
r
d
T
y
pe
-
A
NF
C
tag
s
.
A
l
t
ho
u
gh
w
e
h
av
e
no
t
us
ed
,
th
e
r
ec
en
tl
y
i
ntrod
uc
ed
NT
A
G
T
y
pe
2
NF
C c
ards
of
f
er
m
uc
h s
up
erio
r
s
ec
urit
y
m
ec
ha
ni
s
m
s
f
o
r
a
proj
ec
t l
i
k
e t
hi
s
.
•
S
ho
r
t ra
ng
e
c
on
t
ac
tl
es
s
te
c
hn
o
l
og
y
•
Li
m
i
ted
to
10
c
m
r
an
ge
•
V
er
y
hi
gh
pri
v
ac
y
•
13
.5
6 M
H
z
f
r
eq
ue
nc
y
•
10
6 t
o 4
24
K
bp
s
da
ta
r
ate
•
Lo
w
c
os
t a
nd
l
o
w
po
wer
th
an
B
l
u
eto
oth
or
W
i
-
Fi
•
T
hree o
pe
r
at
i
ng
m
od
es
–
Read
/
W
r
i
te
–
P
ee
r
t
o P
ee
r
3.
Re
sult
and
Imp
le
men
t
a
t
ion
T
he
ac
c
o
m
pa
n
y
i
ng
s
tr
at
eg
y
c
om
pres
s
es
a
c
oi
n e
x
c
ha
ng
e,
•
B
ef
ore
s
tart
i
ng
a
c
oi
n
ex
c
h
an
ge
,
e
ac
h
c
ard
wi
l
l
b
e
tr
i
e
d
f
or
i
ts
l
e
gi
t
i
m
ac
y
.
A
ge
nu
i
ne
c
ard
i
s
a
on
e
tha
t
h
as
an
en
c
od
e
d
m
e
m
ory
terr
i
tor
y
th
at
ha
s
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Ref
er
en
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s
[1
]
Zh
a
o
B
M
a
h
o
n
e
y
.
An
a
l
y
s
i
s
o
f
a
NFC
W
i
re
l
e
s
s
Po
w
e
r Sy
s
te
m
.
2
0
1
0
.
[2
]
M
Em
m
s
,
e
t
a
l
.
Pra
c
ti
c
a
l
Att
a
c
k
o
n
Con
ta
c
tl
e
s
s
Pa
y
m
e
n
t
Card
s
.
In
W
o
r
k
s
h
o
p
-
Hea
th
,
W
e
a
l
t
h
a
n
d
Id
e
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t
i
ty
Th
e
ft
.
2
0
1
1
.
[3
]
R L
i
fc
h
i
tz
.
Hac
k
i
n
g
t
h
e
NFC Cr
e
d
i
t
Car
d
s
.
H
a
c
k
i
to
Erg
o
S
u
m
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f
e
re
n
c
e
.
[4
]
J
Ro
d
ri
g
u
e
s
,
e
t
a
l
.
A
Se
c
u
re
N
FC
Ap
p
l
i
c
a
t
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o
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r
Cred
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t
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ra
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r A
m
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M
o
b
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l
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Ph
o
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s
.
2
0
1
2
: 1
-
5
.
[5
]
Ki
ru
b
a
k
a
ra
m
o
o
r
th
i
R,
Ari
v
a
z
h
a
g
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n
D,
Hel
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n
D.
Su
rv
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y
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En
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p
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s
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d
to
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Clo
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s
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In
d
i
a
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o
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rn
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e
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n
d
T
e
c
h
n
o
l
o
g
y
.
2
0
1
5
;
8
(
3
6
).
[6
]
Ki
ru
b
a
k
a
ra
m
o
o
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th
i
R,
Ari
v
a
z
h
a
g
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n
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An
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l
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Clo
u
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Co
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T
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y
.
In
d
i
a
n
Jo
u
rn
a
l
o
f
Sc
i
e
n
c
e
a
n
d
T
e
c
h
n
o
l
o
g
y
.
2
0
1
5
;
8
(2
1
)
.
Evaluation Warning : The document was created with Spire.PDF for Python.