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Access systems and information exchange between systems

Upcoming meetings
  • DateNameLocation
  • 01 September 2021TC51 36th meetingVirtual meeting
  • 30 November 2021TC51 37th meetingTokyo


Technology for real-time access control is widely used for many situations such as entrance gates of facilities and service access control systems. Membership and settlement services also benefit from real-time access control systems connected via networks and using database information.

Sophisticated cloud, virtualisation, database, networking technology and services and the evolution of authentication technology such as biometrics, NFC, QR codes used in distributed and modular access control systems enable previously underserved users and operators to innovate around new use cases.

TC51 developed ECMA-412 “Framework for distributed real-time Access systems” which defines a common module architecture and the message exchanges between each module for various cloud, virtualization and other services. ISO/IEC published ECMA-412 as ISO/IEC 20933 in May 2016. The 2nd edition of ECMA-412 introduces new functionalities on performance management mechanisms. Performance management mechanisms allow an Access system to be evaluated for performance by using specific elements and metrics. ECMA-412 was submitted to ISO/IEC for approval under a fast-track procedure to be published as a revised edition of ISO/IEC 20933.

In December 2018, the Standard ECMA-417 “Architecture for a distributed real-time access system” was published. This standard specifies the reference architecture for a distributed real-time access system. The architecture specifies layer concept of the system, functionalities of each layer, and interfaces.

TC51 is currently working on the next phase of the standard and the expectation is that current access systems for particular services can easily expand their services to wider areas and also easily collaborate with various other service systems by keeping interoperability and therefore a standard in mind.