From Techdo.com comes the alarming news of the world's smallest RFID tags
Smaller than a grain of sand, sixty-times
smaller than those RFID's pictured above, the new RFID "powder" can be dusted on anything, safely ingested by humans, or (one would assume) snorted up the nose. Each microchip -- finally, that word has meaning again -- contains a 128-bit ROM encoded with a unique ID which, when scanned with standard RFID equipment, gives itself up quicker than Paris Hilton locked in a liquor store.
Suddenly I feel the need for a shower.
You know... to get clean.
Aw, quit it.
Anyway, thanks to Big Brother's magic pixie dust, anyone and anything can be assigned a unique ID and then tracked. Now, the good news: RFID technology is proximity sensitive, working over very short distance. Most RFID rigs I've played with have ranges measured in inches, and usually max out at a few feet. So even if you were coated head to toe with the new RFID powder (sit back a moment and imagine how that might accidently
happen) you'd have to walk within a few feet of a pylon calibrated to read your chips.
But that's now. In a few years when Happy Meals come pre-dusted, things may be different.
Despite the induced willies, it's cool technology.