A data transaction system for process monitoring, with smart cards of the ISO geometric dimensions, featuring contact and bi-directional inductive coupling communication, for collecting and storing data. The system comprises fixed triggering stations for short range data transfer with the smart cards...http://www.google.com/patents/US6202927?utm_source=gb-gplus-sharePatent US6202927 - Dual mode proximity and in-range smart card data transaction system
Dual mode proximity and in-range smart card data transaction system
