Calypso is the international electronic ticketing standard for contactless smart cards, originally designed by a group of European transit operators. It ensures multi-sources of compatible products, and makes possible the interoperability between several operators on the same area.

This site contains the Calypso Standard reference documentation. Some documents are publicly accessible, others are only accessible to registered members.

For more information about Calypso, please contact  Calypso Networks Association (CNA)

To obtain a Calypso manufacturing licence, please contact Innovatron, the company licensing this technology.