Google launches Pixel phones and Home hub

Google has placed a virtual assistant at the heart of its latest smartphones and first voice-activated speaker. The two Pixel handsets are the first mobiles to trigger Google Assistant by pressing their home buttons, somewhat like Apple's Siri. The Home speaker lets the same artificial intelligence tool be controlled without use of a touchscreen. Google also unveiled new virtual reality kit and a 4K media streamer. However, the US company will have to overcome privacy concerns and convince users that chatting to a virtual assistant has advantages over using individual apps.