I answered Yes & told him to visit this thread!
Here is How to Disable Picture Password in Windows 8?
1.Click on Start & type Group policy
navigate to Settings
You can see Edit Group Policy

Click on it.
2.Its look like this

3.Click on Computer Configuration

4.Navigate to Administrative Templates.

5.Click on System and it will open the System options

6.Open Logon in System

7.Now you can see third option as Turn off picture password sign-in

Double click on it to open
8.Choose Disabled and click Appy to disable

Same path can be used to Enable it.
