Have you checked into the Zigbee Alliance? I have been wondering if the purchase of Holocom had something to do with the old "total home" thing a few years ago. I have not looked into the 802.15.4 as of yet and thought maybe you had. Also, I noticed that Securus Technology gets supplies from a co. that makes RFID tags for prisioners--I thought that was interesting and wondered if it could be used in "total home security". Anyway, I thought you may have some ideas/gathered info. alrerady. tia, ads