A new Chrome extension, called Google Tone, released this week makes it possible to share a URL with another computer in the room using a series of beeps and boops. The concept is dead simple yet instantly instills a sense of disbelief. A computer making seemingly random sounds can transmit the URL for the tab I have open in Chrome across the room? Get out. Full of skepticism, I decided to put it to the test. I installed the Chrome extension on a MacBook Air and a HP laptop running Windows 10. And you know what? It works! Click on...