A multifunction card includes a programmable memory, a magnetic stripe, and an electronic ink display. The programmable memory is able to store corresponding account data and image data for a plurality of different accounts. The card holder is able to use a portable terminal to select one of the accounts...http://www.google.es/patents/US7140550?utm_source=gb-gplus-sharePatente US7140550 - Multi-account card with magnetic stripe data and electronic ink display being changeable to correspond to a selected account
Multi-account card with magnetic stripe data and electronic ink display ...
