Radio in Glass
Fujitsu Frontech, Fujitsu, Fujitsu Labs, and Nippon Sheet Glass co-developed what they call "glass antennas." Developed are UHF RFID antennas integrated in a glass gate and a glass showcase. RFID antennas are directly printed on the glass gate. These devices are being exhibited at the RETAILTECH JAPAN 2005 trade show in Tokyo (starting March 1).
via nikkeibp, March 1, 2005, in Japanese.
A related news: RFID Journal reported that a swiss startup patented a way of embedding a tiny RFID transponder in the glass crystal of a watch last summer.