This part of ISO/IEC 7816 specifies directly or by reference, data elements, including composite data
elements that may be used in interindustry interchange.
It identifies the following characteristics of each data element:
— identifier;
— name;
— description and reference;
— format and coding (if not available in other ISO standards or parts of ISO/IEC 7816).
The layout of each data element is described as seen at the interface between the interface device
and the card.
This part of ISO/IEC 7816 provides the definition of data elements without consideration of any
restrictions on the usage of the data elements.
It does not cover the internal implementation within the card and/or the outside world. With the
exception of login data objects (6.5), only application class tags are eligible in this part of ISO/IEC 7816.
When using an interindustry template, an application is allowed to nest context-specific class tags (see
ISO/IEC 7816-4) under such a template unless it is previously marked as Reserved for Future Use ISO/
IEC JTC 1/SC 17.