The following links provide a wide range of very useful information on the subject of smart cards and RFID:

International Card Manufacturers Association
Smart Card Alliance
Card Europe
Java Card Forum
Sun – Java Card Technology
MUSCLE – Movement for the Use of Linux in a Smart Card Environment
ISO standards for Identification cards and related devices
European Telecommunications Standards Institute
European Smart Card Industry Association
Automated Identification Trade Association
Contactless News Online
RFID News Online
RFID Journal