The ZVT-Host-Schnittstellen-Anwender e.V. Executive Committee

The Executive Committee conducts the business of ZVT-Host-Schnittstellen-Anwender e.V. in accordance with the law, association statutes, resolutions of the General Meeting and provisions of this association charter.

As part of its management duties, the Executive Committee members are required to observe and implement the commitments that were declared by Worldline S.A. and equensWorldline GmbH in the Commitment Letter to the European Commission of April 18, 2016.

The Executive Committee should be contacted if you would like to become a ZVT member or purchase a license to use the ZVT Host Interface.

1st Chair

Mr Jörg Stahl

Mr Jörg StahlFirst Data GmbH

For over 20 years, Jörg Stahl has been recognized as an expert in the field of card-based payment transactions. Since 1997, he has held various positions at First Data GmbH where he has been responsible for the technological development of the company’s product portfolio. In his position as Director Product & Market Management, his work focuses on product planning and the technical implementation of product solutions for customers in Germany, Austria and Belgium.

2. Chairman

Mr Lars Schweigel

Mr Lars Schweigel

Since 2008 Lars Schweigel is the Manager Technology (CTO) at WEAT responsible for the operation and further development of the technical network. In November 2018 he was nominated Company Officer with statutory authority. Lars Schweigel has been working in the card business since 2003. Until October 2007 he worked as project manager at CCV-Allcash. In November 2007 he started working for the network service provider WEAT. Within WEAT he established the areas of project management, IT coordination and software development. Today he is responsible for the production of more than 300 million card transactions per year. As WEAT is developing its core NSP software themselves, he is familiar with the business processes and payment protocols used in the payment industry since many years.


Mr Ralf Hintner

Mr Ralf HintnerWorldline

Ralf Hintner has been working in the field of data transmission for all aspects of cashless payment transactions for more than 30 years. In his current job at Worldline, he is responsible for network topics and for transmission security on POS terminal connections.


Mr Winfried Honecker

Mr Winfried Honecker equensWorldline SE Germany

Dr. Winfried Honecker has over 20 years’ experience in the Poseidon OLTP product area at equensWorldline GmbH. Thanks to his longstanding experience in the field of network operations, he is now responsible for the development and implementation of concepts for new topics. Before the ZVT Host Protocol was transferred to ZVT-H, he spent many years managing the contents of the interface specification. In autumn 2016, he was made project leader at equensWorldline GmbH for establishing ZVT-H.

The ZVT-Host-Schnittstellen-Anwender e.V. Advisory Board

Decisions concerning the maintenance of the interface result from transparent decision-making processes and – as is usual for the internal procedures of standards organizations – must be based on a consensus opinion of the members, but without a veto right of any single member. A ZVT-H Advisory Board was established to evaluate requests and requirements, and extend the interface for future needs. The Advisory Board plays the principal role in coordinating the work, evaluating members’ extension requests, and coordinating the implementation of changes.

Under the statutes and association’s charter, ZVT-H members alone have the right to request changes to the specification, in particular extensions, clarifications, corrections and similar additions to the ZVT Host Protocol.

The association does, however, also make its decision-relevant information publicly accessible on this website and communicate its decisions and updates here.

The Advisory Board consists of five people who are elected from ZVT-H members, in each case, for a three-year tenure.

The ZVT-H Advisory Board current consists of the members:

Karl-Heinrich Funck (Advisory Board Chair)
Stefan Dimitrov (Advisory Board Member)
PayTec AG
Uwe Liegl (Advisory Board Member)
CCV Group B.V.
Peter Ulbrich (Advisory Board Member)
Verifone GmbH
Kai Martin (Advisory Board Member)
Feig Electronic GmbH

To send an enquiry to the Advisory Board, please use the contact form.

Members of the ZVT-Host-Schnittstellen-Anwender e.V.

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