Google, Now: A new feature in Qualcomm's chips will let you wake your phone with a voice command.

Imagine waking up in the morning, stretching, and asking your sleeping smartphone, "Ahoy, Google, what's the weather like?" to get the local forecast. A new feature unveiled this week by mobile chip maker Qualcomm could soon make this a reality. Called Snapdragon Voice Activation, it will wake up gadgets that include the company's Snapdragon 800 processors--intended for things like high-end smartphones, tablets, and smart TVs--from standby or airplane mode once you've uttered a special voice command that phonemakers like HTC and Samsung can determine. The feature then starts up the phone's own voice-recognition software, such as Android's Google Now voice search. Such "persistent listening" technology may pick up steam as growing hordes of smartphone owners become acquainted with voice-activated search and virtual personal assistants like Google Now and Siri, and as Qualcomm and others begin adding it to chips.