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by 3r3rni9 3393 days ago
Check out Google Tone: https://chrome.google.com/webstore/detail/google-tone/nnckeh...

"Broadcast any URL to computers within earshot. Google Tone turns on your computer's microphone (while the extension is on) and uses your computer's speakers to exchange URLs with nearby computers connected to the Internet. You can use Google Tone to send the URL for any web page, including news stories, pictures, documents, blog posts, products, YouTube videos, recipes—even search results. Any computer within earshot (including over a phone or Hangout) that also has the Google Tone extension installed and turned ON can receive a Google Tone notification."