In England, another digital money scheme emerged: Mondex. Cryptographic methods were used, but none of the methods is published. Unfortunately, this does not raise trust into the system.
Mondex has been designed to be a global payment system. International interoperability has been catered for by the adoption of standards, in the selection of the Mondex Brand and the employment of language-independent ergonomics. This means that it should be as easy to use a Mondex card in a shop in the UK as it will be to do so in Japan or India.