After all these years, I still prefer using Android's pattern unlock feature as opposed to a standard PIN -- here's why.

To unlock your device using facial recognition, simply raise your device to wake it up and look at the screen. The device will automatically recognise your face and unlock it.

The odd Android pattern unlock aficionado notwithstanding, most of us rely on punching in PINs on at least a semi-regular basis. Back in the day, 4-digit PINs were the standard.