I think it's common practice for most serious security badges to rely on RFID for part of the verification, but some sort of user input for the rest. I have a prox card at work (which, I assume, is an RFID-based card), but the card only activates a keypad. Without my PIN, it's useless.
WebHostingGuy writes "In a review by Gary Krackow from MSNBC who reviewed Vista Beta 2 over the last week he had very disappointing problems. "for me [it] was one of the worst operating system experiences that I've ever encountered." Built-in audio and wireless didn't work on his Levono laptop. It took four days to get the first installation."