Wi-Fi light bulbs are almost here. Plug them in to an ordinary light socket. Fire up the Wi-Fi device that comes with them. Grab the app.
Now, you've got yourself an instant "smart home" where you can program your home lighting from your tablet or phone, no rewiring required.
GreenWave Reality, the maker of the Wi-Fi light-bulb system, has just gotten approval to sell it in the U.S. market.
Wi-Fi lights let you do things like turn all your lights off at once, program your outside lights to turn on at certain times, or turn lights on and off when you are on vacation, so it looks like you are home.