What scares me about integrated cards is that we are just one step away from a computer program going through the following process a million time a second: Customer Identified (Race, Sex, Age, Education, Asset Value, Nationality, Criminal Record, Occupation, Recent Movements) entering platform 1 of station X ? Recent purchase packet of salted crisps ? available credit ?Y ? Previous retail habits analyzed - Search product correlation database ? Products identified ? Deploy sensory suggestions for purchase of soft drink Z ? likely retail outlet station kiosk ? Change suggestive advertising features at kiosk to fit Customer buying/voting profile. Now think of how that could be used by forces less benign than corporate greed.