I wanted to post this year just in case anyone else was able to re-create what I've done. First, I asked Siri to locate a family member which brought up a map of their location on the lock screen. Tapping the map automatically opens maps, without having to unlock the phone. I tested this with other apps as well, namely Twitter and Facebook, and almost invariably it would allow me to bypass the touch ID and passcode and automatically launch the app by simply asking Siri from the lock screen to open them. I don't remember this being an issue in 8.3. Before, it would always say, "You need to unlock your iPhone first."