A portable telephone set includes a card, a portable telephone set body, a card insertion detecting circuit, and a control section. The card has a ROM in which the identification information and password of a subscriber are stored in advance. The portable telephone set body has at least a radio section...http://www.google.es/patents/US6128511?utm_source=gb-gplus-sharePatente US6128511 - Card-equipped portable telephone with a security feature
Card-equipped portable telephone with a security feature
