The BlackBerry smart card reader has achieved FIPS 140-2 certification level 3. This is the highest level of certification by any wireless card reader on the market. For those of you that do not know about the smart card reader here is a great description from RIM:

The BlackBerry Smart Card Reader is designed to work with personal identification cards issued by government organizations or other high-security organizations. Users insert a smart card into this lightweight reader and wear it on a lanyard as a two-factor authentication device for secure access to BlackBerry smartphones, desktop computers and facilities. BlackBerry smartphones and desktop computers automatically lock when the user’s smart card is not in proximity.
So you can see how this little device can enhance security. It basically locks down your computer whenever the computer cannot communicate with the card reader. This is really important in high profile environments where security is paramount.