LG unveiled the LG G2 Mini today at the Mobile World Congress 2014. There's also the new L Series III family including the L90, L70 and L40, which will all run Android KitKat.

Check out this trailer here:



The video puts a lot of emphasis on the taps. There's an application called Knock Code, which is the software heir to Knock Knock that we saw in LG G2. It lets you unlock your smartphone by tapping the screen.

The application will be present on the LG G Pro 2. According to LG, Knock Code will have over 86,000 combinations. Here's how it works: