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

International Card Manufacturers Association
http://www.icma.com/index-flash.htm
Smart Card Alliance
http://www.smartcardalliance.org/
Card Europe
http://www.cardeurope.demon.co.uk/
Java Card Forum
http://www.javacardforum.org/
Sun – Java Card Technology
http://java.sun.com/products/javacard/
MUSCLE – Movement for the Use of Linux in a Smart Card Environment
http://www.linuxnet.com/smartcard/
OpenCard
http://www.opencard.org/
Card Technology.com
http://www.cardtechnology.com/
EuroTag
http://www.eurotag.org/frameset.html
ISO standards for Identification cards and related devices
http://www.iso.org/iso/en/CatalogueListPage.CatalogueList?ICS1=35&ICS2=240&ICS3=15
European Telecommunications Standards Institute
http://www.etsi.org/
European Smart Card Industry Association
http://www.eurosmart.com/
Automated Identification Trade Association
http://www.aimglobal.org/
Contactless News Online
http://www.contactlessnews.com/
RFID News Online
http://www.rfidnews.org/
RFID Journal
http://www.rfidjournal.com/