Calypso is an international electronic ticketing standard for microprocessor contactless smart cards, originally designed by a group of transit operators from 11 countries including Belgium, Canada, France, Germany, Italy, Latvia, México, Portugal and others. It ensures multi-sources of compatible products, and allows for interoperability between several transport operators in the same area. Calypso was born in 1993 from a partnership between the Paris transit operator RATP and Innovatron, a company owned by the French smartcard inventor, Roland Moreno. The key features of the scheme were patented by Innovatron. Most European transit operators from Belgium, Germany, France, Italy and Portugal eventually joined the group in the following years. The first use of the technology was in 1996. More information...
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