ISO/IEC 7811-7:2004(E)
© ISO/IEC 2004 – All rights reserved iii
Contents Page
Foreword ............................................................................................................................................................ iv
Introduction ........................................................................................................................................................ v
1 Scope...................................................................................................................................................... 1
2 Conformance ......................................................................................................................................... 1
3 Normative references ........................................................................................................................... 2
4 Terms and definitions........................................................................................................................... 2
5 Physical characteristics of the identification card ............................................................................ 4
5.1 Magnetic stripe area warpage.............................................................................................................. 5
5.2 Surface distortions ............................................................................................................................... 5
6 Physical characteristics of the magnetic stripe.................................................................................6
6.1 Height and surface profile of the magnetic stripe area..................................................................... 6
6.2 Surface roughness................................................................................................................................ 8
6.3 Adhesion of stripe to card.................................................................................................................... 8
6.4 Wear of magnetic stripe from read/write head................................................................................... 8
6.5 Resistance to chemicals ...................................................................................................................... 8
7 Performance characteristics for the magnetic material .................................................................... 8
7.1 General ................................................................................................................................................... 8
7.2 Testing and operating environment.................................................................................................... 8
7.3 Signal amplitude requirements for magnetic media ......................................................................... 9
8 Encoding technique............................................................................................................................ 11
9 Encoding specification....................................................................................................................... 12
9.1 Angle of recording .............................................................................................................................. 12
9.2 Nominal bit density ............................................................................................................................. 12
9.3 Flux transition spacing variation....................................................................................................... 12
9.4 Signal amplitude requirements.......................................................................................................... 13
9.5 Bit configuration ................................................................................................................................. 13
9.6 Direction of recording......................................................................................................................... 13
9.7 Leading and trailing clock bits .......................................................................................................... 13
10 Data structure...................................................................................................................................... 13
10.1 Track format ........................................................................................................................................ 14
10.2 Coding for error detection and correction........................................................................................ 15
11 Decoding.............................................................................................................................................. 18
12 Location of encoded tracks ............................................................................................................... 18
Annex A (informative) Read compatibility of magnetic stripes (ISO/IEC 7811-6 and ISO/IEC 7811-7) ..... 20
Annex B (normative) Signal amplitude measurements ................................................................................ 21
Annex C (informative) Magnetic stripe abrasivity ......................................................................................... 22
Annex D (informative) Static magnetic characteristics................................................................................. 23
Annex E (informative) Reed-Solomon code references................................................................................ 25