Technofiles: The Trouble with Wi-Fi; May 2012; Scientific American Magazine; by David Pogue; 1 Page(s)

To most people, Wi-Fi is something of a miracle. Within 150 feet of some hidden base station, your laptop, tablet or phone can get online at cable-modem speeds—wirelessly.

But Wi-Fi is also something of a mystery. So many readers ask me about Wi-Fi that I’ve hunted down the answers, once and for all, from the nation’s most expert experts.