The contactless standard for a new vision of transport
Calypso is the open standard for contactless ticketing, originally designed by a group of European transit operators and used throughout the world.
Calypso is the appropriate solution suiting transit operator needs.
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Current Calypso users or supporters (transit operators, transit authorities and other users) have created Calypso Networks Association (CNA), an international non-profit organization that ensures Calypso improvements and promotion, and facilitates exchanges of information.
More about CNA