It seems to me that Microsoft has finally got their hands on some cool guys. This technology was shown at some point of 2006 in Cali's GeekBrief.tv
It looks pretty cool, but I can't say how quick this kind of technology will be adopted (and who will be the early adopters).
But if Microsoft need a beta tester, just leave a comment!
(RFID Chips, Bluetooth, WIFI)