The days of having to remember a complicated password to unlock your device are nearly long gone.
Thanks to biometric technology, such as Face ID, you can now access devices - like the iPhone - without having to type anything in. Just a quick glance at Apple's TrueDepth camera and the screen unlocks in a flash.
While this technology makes it almost impossible for others to access your device, there is still the odd loophole that can put you at risk. And iPhone users are being warned of a simple trick which could allow someone to unlock their device while they sleep.