A new security flaw has been uncovered in the latest iOS 6.1 software update, allowing for a stranger or potentially malicious user to bypass the lock screen passcode set on an iPhone. The process involves dialing an emergency call, followed by tapping a sequence of buttons. The issue is present in the latest iOS 6.0.1, 6.0.2 and 6.1 versions. A similar bug existed back in iOS 4.1, allowing access to contacts and photos on passcode-locked iPhones, but was quickly patched by Apple. I would expect the same to happen in this case.