Hidden permissions manager found in Android 4.3, lets you set the rules
Installing an Android app brings up a permissions prompt that most folks ignore (though they probably shouldn't). But, what if you could grant applications access to some parts of your smartphone and not others? That's something Android Police have discovered is already baked into Android 4.3, and it's called "Apps Ops." The feature is hidden by default, but can easily be enabled via a third-party app in the Play Store, which brings it to life and allows you to fine tune other apps' permissions to read your contacts, access your location via GPS, or even read your call log. This is a buried feature and we have no idea if and when it'll be officially activated, but it looks like Google's pledge for better privacy could mean more than just an incognito mode.