We have trusted faces, trusted places, and even trusted Bluetooth devices – the point of all of these is to sacrifice just a little bit of security for a whole lot of convenience. But what about trusted voices?
It turns out that this latest feature is rolling out to users right now who have the latest version of Google Play Services. So what is this feature all about?
Trusted Voice that is the latest Smart Lock feature in Android Lollipop that allows voice control or voice command to unlock any Android device. Turn it on in your Smart Lock settings, and you’ll be able to access your device whenever it recognizes you saying, “OK Google.”
But just be warned: Just like there’s nothing stopping someone from fooling your phone’s Trusted Face feature by holding up a photo of yourself, someone could also sneakily record you saying, “OK Google,” and then use it to access your device. Is it likely that someone would go through all that trouble? Probably not. Is it possible? Sure.
If you don’t see this right away, sit tight – it’s a staggered rollout that should be available to everyone running Android 5.1 soon enough.[Android Community]