Wireless-communications technology is wrapping the earth in layer upon layer of inter connectivity. And those tiny chips embedded in everyday gadgets will keep getting more powerful, like their more famous cousins inside computers. Soon, the anonymous chips will get smart--and be aware of their silicon neighbors, The bedroom clock will just need to reach the phone to check on traffic patterns and flight schedules before deciding whether it should fiddle with its alarm time. When your rechargeable toothbrush detects signs of a cavity, it can send signals through the electrical wiring and get your electronic daybook to consult with your dentist's digital appointment book, then display a few options on the bathroom mirror