Siri can be used to unlock iPhone. It still works. PLEASE fix this bug.
https://www.facebook.com/100001124120764/videos/1018654068182054/
This is the link to the video in which the person unlocked iPhone through asking Siri for time, going to clock app, then tapping the plus sign on the upper right hand corner, the randomly type something, copying the words just typed. Once the words are highlighted,go to share option, then choose message, and then paste whatever is copied. In the end, tap the home button, and the phone is unlocked.
iPhone 6, iOS 9.2.1