ISO/IEC 7811定义了本文件第3条中定义的识别卡的特性，以及此类卡在国际交换中的使用。 本文件规定了识别卡上高矫顽力磁条（包括任何保护层）的要求、编码技术和编码字符集。它同时考虑了人和机器方面，并规定了最低要求。 矫顽力影响本文件中规定的许多数量，但其本身并未规定。高矫顽力磁条的主要特点是提高了抗擦除能力。这是在保持与ISO/IEC 7811-2中定义的磁条的读取兼容性的同时，以最小的接触损坏其他磁条的可能性实现的。 ISO/IEC 7811提供了执行卡的标准。 ISO/IEC 7811中未考虑测试前卡的使用量（如有）。不符合规定标准的情况由相关方协商解决。 ISO/IEC 10373-2规定了用于对照本文件规定参数检查卡片的测试程序。 注:本文件中SI和/或英制测量系统中的数值可能已四舍五入，且相互一致，但并不完全相等。使用任一系统都是正确的，但混合或重新转换值可能会导致错误。最初的设计是使用英制测量系统进行的。

ISO/IEC 7811 defines the characteristics for identification cards as defined in Clause 3 of this document and the use of such cards for international interchange. This document specifies requirements for a high coercivity magnetic stripe (including any protective overlay) on an identification card, the encoding technique and coded character sets. It takes into consideration both human and machine aspects and states minimum requirements. Coercivity influences many of the quantities specified in this document but is not itself specified. The main characteristic of the high coercivity magnetic stripe is its improved resistance to erasure. This is achieved with minimal probability of damage to other magnetic stripes by contact while retaining read compatibility with magnetic stripes as defined in ISO/IEC 7811-2. ISO/IEC 7811 provides criteria to which cards are to perform. No consideration is given within ISO/IEC 7811 to the amount of use, if any, experienced by the card prior to test. Failure to conform to specified criteria is negotiated between the involved parties. ISO/IEC 10373-2 specifies the test procedures used to check cards against the parameters specified in this document. NOTE Numeric values in the SI and/or Imperial measurement system in this document may have been rounded off and are consistent with, but not exactly equal to each other. Using either system is correct but intermixing or reconverting values can result in errors. The original design was made using the Imperial measurement system.