Nobuyuki Matsushita Shigeru Tajima Yuji Ayatsuka Jun Rekimoto Wearable Key: Device for Personalizing Nearby Environment. 119-126 2000 ISWC http://computer.org/proceedings/iswc/0795/07950119abs.htm db/conf/iswc/iswc2000.html#MatsushitaTAR00