Once a common sight, pay phones are now a rarity. You might be surprised to find one in the quaint D.C. neighborhood of Chevy Chase, near an elementary school. It’s an old-fashioned chrome and black steel telephone on a pole. But this is no ordinary payphone. First of all, it doesn’t cost a cent to use. All one has to do is pick up the phone and make a call. But who wants to make a call on this phone when at the press of just two buttons, one could…
