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During yesterday’s I/O keynote, Google announced a rather fantastic new feature coming to the Chromecast: soon, your friends won’t need to be connected to your WiFi to be able to send things to your TV. While Google’s Rishi Chandra mentioned yesterday that the new WiFi-less pairing system used a “variety of technologies” to determine when you’re near a Chromecast unit, he didn’t really breakdown what those technologies might be.

“How Can Chromecast Connect To Your Friend’s Phones Without Using WiFi? Ultrasonic Sounds” is categorized as “science and technology”. This video was licensed from Grab Networks. For additional video content, click the “video” tab at the top of this page.

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