LiveScience.com - Scary Small: New Tracking Chip Size of a Dust Grain

LiveScience.com - Scary Small: New Tracking Chip Size of a Dust Grain: "The world's smallest and thinnest RFID tags were introduced Tuesday by Hitachi. Tiny miracles of miniaturization, these RFID chips (Radio Frequency IDentification chips) measure just 0.05 x 0.05 millimeters. 'RFID' refers to small electronic devices that use a tiny antenna to transfer small amounts of data for identification purposes."