double tab then slide to zoom in or out with one hand
it matters as it has been front-pae news here on xda since last night...
that is why every thread about rooting suggest to backup your efs partition.
Keep your finger on the screen for the second tap and slide. It's not a KitKat feature. ;)
Sent from my Nexus 5 using Tapatalk
are you sure? my gnex on cm 10.2 doesn't have this feature.