The feedback app within iOS is not working so I thought I'd let Reddit know my findings!

With your device locked, ask siri "who am I". Everybody knows this will tell you lots of I do about the owner of the device, but in iOS 9 PB1 there is a HUGE bug. Once the info is show click on the email address, the default mail app will open and let you email the device owner. Now press the home button and you have bypassed the lock screen.

I did this on an iPhone 5S with the 1st public beta of iOS9. I have touch ID enabled and I'm not sure if this bug is apparent with it disabled.

Please do not exploit this on somebody else's device or a stolen device!! I am letting you know so that you are aware. Simple fix is to turn siri off for now.