The present invention relates to a card system in which a card with memory function capable of rewritably holding a plurality of services (applications), for example, an IC card is installed with a plurality of services (applications) for receiving the service, and the user is informed, briefly and correctly...http://www.google.com.tw/patents/US6622914?utm_source=gb-gplus-share專利 US6622914 - Card system, card information presentation apparatus, card issuing apparatus, card contents update apparatus, card data update apparatus and card information distribution system
