If you are using Windows 8 or Windows 8.1 then you must have noticed that whenever you type your Windows login password or type password on Internet Explorer then by default Windows will show a human eye like button at the corner of password field and when you click on it your password will be revealed.
This feature is called “Password Reveal Button” or “Show Password Button“it a nice feature as it allows you to see what password you had entered but at the same time it a threat too, suppose you had saved a password of your email account on Internet Explorer and if someone else uses your system then he might get a sneak peak at your password.
To disable this feature all you need to do is, type regedit at your run command and navigate to
HKEY_LOCAL_MACHINESoftwarePoliciesMicrosoftWindowsCredUI
Now in right side pane create DWORD DisablePasswordReveal and set its value to 1, now it will disable your password reveal button everywhere on Windows 8 or Windows 8.1 even including Internet Explorer.