In iOS 7, you specified whether Notifications could be displayed on the Lock Screen in the Notification Center. If you did, there was a small white bar at the top of the Lock Screen. Plain enough. In iOS 8, Apple has consolidated that setting, along with others, in the Setting called Touch ID & Passcode.
In iOS 7, the part of the Settings hierarchy that controls what can be done on the iOS device Lock Screen looked like this:
- Passcode (& Touch ID if applicable) - Allow Access When Locked - Siri - Notification Center - Access on Lock Screen - Notifications View - Today View - Control Center - Access on Lock Screen
Here's a partial Notification Center screen shot from iOS 7.
iOS 7: Settings > Notification Center
In iOS 7, if you allowed Notification Center access on the Lock Screen (as shown above), you'd have a small white bar at the top of the Lock Screen that prompts you to pull down, like this:
Partial Shot of Lock Screen on iPhone
In iOS 8, the "Access on Lock Screen" option in the renamed "Notifications" is gone, and so you may be wondering how to enable and disable that white bar.
That user control has been moved to Settings > Touch ID & Passcode (or just Passcode for the current iPads). So the hierarchy now looks like this:
- Touch ID & Passcode (or just Passcode) - Allow Access When Locked - Today - Notification View - Siri - Passbook - Reply with Message - Control Center - Access on Lock Screen
You'll need to scroll down under Touch ID & Passcode to find those five items. Here's a screen shot.
iOS 8: Settings > Touch ID & Passcode
If the goal was to consolidate all the actions that could take place on the Lock Screen, then Apple should have moved the management of the Control Center there as well. Perhaps, because there are only two settings under Control Center, Apple didn't want to have only one setting remaining.
Finally, in reviewing these settings for the Lock Screen, you should decide whether convenience or security is paramount. If your iPhone falls into the wrong hands, various notifications that you don't want seen could be revealed untill you get a chance to use Find My iPhone and, if necessary, do a remote erase.