ISO/IEC 7811-2:1995

Identification cards — Recording technique — Part 2: Magnetic stripe

Cartes d'identification — Technique d'enregistrement — Partie 2: Raie magnétique

General Information

• Status: Withdrawn
• Publication Date: 09-Aug-1995
• Withdrawal Date: 09-Aug-1995
• ICS: 35.240.15 - Identification cards. Chip cards. Biometrics
• Technical Committee: ISO/IEC JTC 1/SC 17 - Cards and security devices for personal identification
• Drafting Committee: ISO/IEC JTC 1/SC 17/WG 1 - Physical characteristics and test methods for ID-cards
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 01-Feb-2001

Relations

• Revised: ISO/IEC 7811-2:2001 - Identification cards — Recording technique — Part 2: Magnetic stripe — Low coercivity
• Effective Date: 15-Apr-2008
• Revises: ISO 7811-2:1985 - Identification cards — Recording technique — Part 2: Magnetic stripe
• Effective Date: 15-Apr-2008

Standards Content (Sample)

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ISO/IEC 7811=2:1995(E)
INTERNATIONAL STANDARD @ lSO/IEC
Identification cards - Recording technique -
Part 2:
Magnetic stripe
this part of lSO/IEC 7811. At the time of publication
1 Scope
the editions indicated were valid. All standards are
subject to revision and parties to agreements based
This part of lSO/IEC 7811 specifies characteristics for
on this part of lSO/IEC 7811 are encouraged to
a magnetic stripe (including any protective overlay) on
investigate the possibility of applying the most recent
an identification card, the encoding technique and
editions of the standards indicated below. Members
coded character sets. The magnetic recordings are
of IEC and IS0 maintain registers of currently valid
intended for machine reading.
International Standards.
lSO/IEC 10373 specifies the test procedures used to
check cards against the parameters specified in this lSO/lEC 7810:1995, Identification cards - Physical
part of lSO/IEC 7811. characteristics.
This part of lSO/IEC 7811 specifies the requirements lSO/IEC 781 I-411995, Identification cards - Record-
for cards used for identification. It takes into ing technique - Part 4: Location of read-only
consideration both human and machine aspects and magnetic tracks - Tracks I and 2.
states minimum requirements.
lSO/lEC 781 I-59 995, identification cards - Record-
NOTE - Numeric values in the SI and/or Imperial measure- ing technique - Part 5: Location of read-write
ment system in this part of ISO/IEC 7811 may have been
magnetic track - Track 3.
rounded off and therefore are consistent with, but not
exactly equal to, each other. Either system may be used,
lSO/lEC 10373:1993, Identification cards - Test
but the two should not be intermixed or reconverted. The
methods.
original design was made using the Imperial measurement
system.
4 Definitions
2 Conformance
For the purposes of this part of lSO/IEC 7811, the de-
An identification card is in conformance with this part
finition of “identification card” given in lSO/IEC 7810
of lSO/IEC 7811 if it meets all mandatory require-
and the following definition apply.
ments specified herein.
4.1 primary standard: The primary standard is
A prerequisite for conformance with this part of
based on the Master Standard Reference Tape
lSO/IEC 7811 is conformance with lSO/IEC 7810.
(computer amplitude reference) established by the
United States National Institute of Standards and
Technology (NIST).
3 Normative references
NOTE - The relationship between the Master Standard
The following standards contain provisions which, Reference Tape and secondary reference tapes SRM 3200
is stated on the NIST certificate.
through reference in this text, constitute provisions of

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ISO/IEC 7811=2:1995(E) 0 lSO/IEC
For the purposes of this part of lSO/IEC 7811, voltage amplitude equal to 80 % of the reference
reference cards RM 7811-Z batch C equipped with signal amplitude &, (see figure 5) at a density of
SRM 3200 No. 18-67B are considered as primary 8 flux transitions per mm (200 flux transitions per in).
standards defining not only the average signal
amplitude at 8 flux transitions per mm (certified by
NIST) but also that at 20 flux transitions per mm.
4.8 test recording currents: Two test recording
currents at 350 % (Imin) and 500 % (Zmax) of the
A group of such reference cards is held at the
reference current (1~) shall be used. Zmin = 3,5 1~;
Physikalisch-Technische Bundesanstalt (PTB . They
Z
max = 5,o ZR-
represent this primary standard.
4.9 individual signal amplitude (Ui): Base-to-peak
4.2 secondary standard (reference card):
amplitude of a single readback voltage signal.
Identification card with defined propertic s and
equipped with a SRM 3200 or equivalent tape, the
properties of which are known and stated in relation
4.10 average signal amplitude (&$ Average signal
to the primary standard.
amplitude (UA) is the sum of the absolute value of the
amplitude of each signal peak (6) divided by the
It is intended that reference cards be used for the
number of signal peaks (n).
calibration of tertiary standards for use in routine
calibration.
n
‘ik
Cl I
NOTE - Reference cards, Part No. RM 781 l/2 Batch D,
&=I
can be ordered from Physikalisch-Technische Bundes-
UA
n
anstalt, Lab. 1.41 - Bundesallee 100, D-381 16 Braun-
schweig, Germany, as long as supplies are available
(probably from 1995 to 2001).
4.11 reference signal amplitude (UR): Maximum
average signal amplitude of the reference card
corrected to the primary standard.
4.3 unused un-encoded card: Card possessing
all components required for its intended purpose,
which has not been subjected to any personalization
or testing operation. The card has been stored in a 4.12 physical recording density: Number of flux
clean environment without more than 48 hour transitions recorded on a track per unit length.
exposure to day-light at temperatures between 5 OC to
NOTE - When testing with densities of 6 flux transitions
30 OC (41 OF to 86 OF) and humidity between 10 % to
per mm (I 50 flux transitions per in) and 16,6 flux transitions
90 % without experiencing thermal shock.
per mm (420 flux transitions per in) the correlation factors
are:
4.4 unused encoded card: Unused, unencoded card
UA at 6 flux transitions per mm
according to 4.3 which has only been encoded with all
(150 flux transitions per in)
the data required for its intended purpose (e.g.
l 100 = 100 %
magnetic encoding, embossing, electronic encoding).
UA at 8 flux transitions per mm
(200 flux transitions per in)
The environmental conditions in which the unused
encoded card experiences are to be the same as for
UA at 16,6 flux transitions per mm
the unused un-encoded card.
(420 flux transitions per in)
l 100=105%
&.j at 20 flux transitions per mm
4.5 returned card: Embossed and/or encoded card
(500 flux transitions per in)
after it has been issued to the card holder and
returned for the purpose of testing.
4.13 bit density: Number of data bits stored per
unit of length (bits per mm or bits per in).
4.6 flux transition: Location of the maximum
magnetic flux component normal to the surface of the
magnetic stripe.
4.14 bit cell: Distance between two clocking flux
transitions
4.7 reference current (1~): Minimum recorded
current amplitude which causes on the reference
sub interval: Bit cell divided by two.
card, under the given test conditions, a readback 4.15

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ISO/IEC 7811=2:1995(E)
@ lSO/IEC
a < 9,5 pm (375 pin) for the minimum stripe width
5 Physical characteristics of the
W= 6,35 mm (0,25 in)
identification card
a < 15,4 pm (607 pin) for the minimum stripe width
The identification card shall conform to the
WI IO,28 mm (0,405 in)
specifications given in lSO/IEC 7810.
and - 4 a/W < Slope c 4 a/w.
WARNING - The attention of card issuers is
drawn to the fact that information held on the
When the bending stiffness of the card is less than
magnetic stripe may be rendered ineffective
20 mm (0,79 in) the vertical deviation (a) shall be:
through contamination by contact with dirt and
certain commonly used chemicals including
a < 6,7 pm (263 pin) for the minimum stripe width
plasticizers. Exposure of the card to an intense
WL 6,35 mm (0,25 in)
magnetic field is likely to destroy the recorded
data. It should also be noted that any printing or
a < 12 pm (472 pin) for the minimum stripe width
screening placed on top of the magnetic stripe
W: IO,28 mm (0,405 in)
must not impair the function of the magnetic
stripe.
See figures 1, 2 and 3.
6.1.2 Height of the magnetic stripe area
The vertical deviation (h) of the magnetic stripe area
6 Physical characteristics of the
shown in figures 1 and 2 above the adjacent surface
magnetic stripe
of the card shall be:
6.1 Height and surface profile of magnetic
- 0,005 mm (- 200 pin) 5 h
stripe
mm 500 pin)
5 0,038 (1
6.1.1 Surface profile of magnetic stripe
Spiking in the profile caused by the material “squirt
The transverse surface profile of the magnetic stripe out” in hot stamping is not part of the stripe. It shall
area shall not show a vertical deviation (a) of more not extend above the magnetic stripe area height h as
than: defined above.
Dimensions in millimetres (inches)
82,55 (3,250) min.
C
2,92 (0,115) max.
c- m-
Topreferenceedge
I I
--__-------_---_-__-----------------------------------------------------
--__-----------__-_-----------------------------------------------------
:-~-~-~-~-:-:-:-:-~-~-:-:-:-~-~-~-:-:-:-:-:-:Magnetic stripe area-i-:~iI-:-:IfiI-:iiiEfiIIII-:
-
---_---------___---_____ ------------------------
I--_-----_-_________-----------------------------------------------------
-----_---_--_---________________________--------------------------------
c-
.
u
.-
.a
3
E
iii
z
.-
L
t
2
tn
d
U -
.-
t
z
a
i!
F
ET
E
5
E
.-
.-
;
Figure 1 -
Location of magnetic material for tracks 1 and 2 only on ID-I type card

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ISO/IEC 7811=2:1995(E) @ lSO/IEC
Dimensions in millimetres (inches)
82.55 (3,250) min.
I
-
2,W (0,115) max.?
Topreferenceedge
/-
A-
------------------__-------------- ---
------------_-_-__________________ w-s
3
---------_--_--------------------- -em
-
::::::::::::::::::::::::::::::::::::::::~Magnetic
st
L
-----------_____________
--------------------______________ ---
-----_-___________________________ s-s
---------------------------------- w-m
5 I I -----_-___--______________________ ~~-~-----------------------------
3--
EL
.-
L
c
w
U
.-
c
ii!
F
E
E
z
.-
e
Figure 2 - Location of material for tracks ‘I,2 and 3 on ID-I type card
Magnetic material
Figure 3 -
Surface profile of magnetic stripe

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ISO/IEC 7811=2:1995(E)
@ lSO/IEC
Permitted Not permitted
Permitted Not permitted
Irregular profile
Irregular profile
NOTE - Irregular profiles as shown above may result in poor quality encoding.
Figure 4 - Profile examples
Average signal amplitude l&43) and individual signal
6.2 Surface roughness (RJ
amplitude (UQ) are measured before and after long
The surface irregularity of the magnetic surface shall
term exposure (24 hours) to salt mist, acid and alkaline
not exceed 0,40 pm (15,9 pin) in both the longitudinal
artificial perspiration, as defined in the test method
and transverse directions.
reference document.
&43, after 2 0,90 &43, before
&, after > 0,90 UA3, after
6.3 Adhesion of stripe to card
The stripe shall not separate from the card under
normal use.
7 Performance characteristics for the
magnetic material
6.4 Wear from read/write head
The purpose of this clause is to enable magnetic
interchangeability between card and processing
Average signal amplitude (u&r) and individual signal
systems.
amplitude (Un) are measured before and after 2 000
head wear cycles and shall result in
7.1 General
uA3, after > 0,60 uj43, before
Ui2, after 2 0,80 uA3, after
This method uses a reference card whose material
is traceable to the primary standard magnetic tape
(see 4.1 and 4.2).
6.5 Resistance to chemicals
NOTE - This part of lSO/IEC 7811 does not specify any
Average signal amplitude (uA3) and individual signal
value for intrinsic coercivity.
amplitude (Uiz) are measured before and after short
term exposure (1 minute), as defined in the test
method reference document.
7.2 Testing and operating environment
&43, after 2 0,90 uA3s before
environment for signal
The testing amplitude
q2, after 2 0,90 uA3, after
measurements is 23 OC + 3 OC (73 OF * 5 OF) and

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ISO/IEC 7811=2:1995(E) @ lSO/IEC
relative humidity:
40 % to 60 % relative humidity. When tested under
- 5 % to 95 % with a maximum wet bulb
otherwise identical conditions, the average signal
temperature of 25 “C (77 OF)
amplitude measured at 8 flux transitions per mm
(200 flux transitions per in) shall not deviate from its
value in the above test environment by more than
15 % after 5 minutes exposure over the following
7.2.1 Signal amplitude requirements for
operating environment range:
magnetic material
temperature:
The requirements for magnetic characteristics are
-35°Cto500C(-300Fto1220F)
shown in table 1 and figure 5.
Table 1 - Unused un-encoded cards
I I I
3gnal
Densities flux Test Rec. ’
Parameter
Amp. Requirement
transitions
Current ;
Iesult I
per in 1
I Per mm I
I I I
Signal amp. 1 8 1
200 I 0,80 UR 5 uA1 < I,30 UR
min UAl
Signal amp. 1 8 1
200 I Uil I I,36 UR
I min I uil I 1
Signal amp. I 8 I
200 I 0,80 UR 5 42 5 UA,
max uA2
I I I I
Signal amp. I 20 I
500 I 0,65 UR 5 Ui2
max ui2 I
I I I
Resolution
20 500 I
uA3 2 or7 uA2
I I I max I uA3 I I
Erasure 0 0
I
...