A minor loophole that allows one to bypass the locked screen of the Galaxy Note 2 has been revealed. This could temporarily let you in past the lock screen security, in case you forgot how it goes.
For you to be able to go beyond the lock screen security, hit the "emergency call" button and then tap "emergency contacts". Hold the home button and you will temporarily see the home screen, long enough for you to make a shortcut call on the home screen. This will then render the lock screen security ineffective.
It will revert back to the locked screen if you do not have a shortcut call on your home screen but this can also compromise your email or short messages for as long as it does not go back to the locked screen. Although this is a potential way to breach one's privacy, it is not as worse as other vulnerabilities found in some smartphones and other devices.
See video below: