An IC card incorporates a processor, a memory, etc. The memory stores therein a general electronic money balance having an unlimited use range, a specific electronic money balance having a limited use range, and available genre information defining a use range of the specific electronic money balance....http://www.google.es/patents/US6611819?utm_source=gb-gplus-sharePatente US6611819 - Electronic money apparatus, method, card and computer readable record medium having electronic money processing program recorded thereon
Electronic money apparatus, method, card and computer readable record medium ...
