Alcance
This document defines requirements to support information exchanges among related entities of a common payment scheme. It defines:a) EFC-related functional requirements for a common payment medium;b) an application structure in a common payment medium;c) EFC application data in a common payment medium.The following is outside the scope of this document:— requirements and data definitions for any other transport services such as public transport;— a complete risk assessment for an EFC system using a common payment medium;— security issues arising from an EFC application among all transport services;— the technical trust relationship between a CSRP and a service user;— concrete implementation specifications for implementation of security for an EFC system;— detailed specifications required for privacy-friendly EFC implementations;— any financial transactions of the CSRP.