Really Tiny Chip

No, it's not a tick or a freckle. It's the smallest RFID chip on record. It's made by Hitachi, and measures 0.15 x 0.15 millimeters in size and 7.5 micrometers thick.  It can store enough data for a 38-digit number. It's pretty cool; hopefully it doesn't blow away in a stiff breeze, though. I'm betting Hitachi spent a bit of money on this one.