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 connected to your TV.
Google is also introducing a new feature called Backdrop, which lets you contribute photos to the default slideshow that appears on your TV. It’s a neat trick that should make the Chromecast feel more personal and welcoming. Google will offer curated topics too; images based on the news, lifestyle, specific places and what’s trending on its Google+ service, for instance.