Later this year, Google will update Chromecast so that anyone can choose and control the content being streamed through the device – even if they’re not on the same Wi-Fi network as the tiny dongle. In short, Chromecast owners will have the option to_authenticate nearby users. This means that if a person is on a cellular network – either because they can’t be bothered to type in a Wi-Fi password, or because you just don’t trust them with it – they can still control the Chromecast. Google is also introducing a new feature called Backdrop, which lets you contribute photos...

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