Flexible Visual Display Units as Security Enforcing Component for Contactless Smart Card Systems

Today, one existing class of RFID systems are based on ISO 14443 (Proximity Coupling). This is the standard for RF-interfaces of contactless smart card systems. Contactless RF interfaces of smart cards are very often regarded as less secure than contact based smart cards. This tenor may be changed based on our new approach. Therefore we suggest to establish secure password authenticated wireless channels for contactless smart cards. Preliminary, a separate channel for the transmission of a short time secret (password) is needed. Moreover, we recommend to use an optical channel realized by a flexible display. On the whole, we suggest contactless smart cards with a small visual display unit as security enforcing component to establish a secure and authenticated radiofrequency communication between a contactless smart card and a contactless reader.