Many have seen the wearable interfaces we've made at Leap Motion. But few know the story & history that led to these designs. What appears to be 'simple' only came after a number of complex designs & iteration.

The first wearable interface was a pip-boy style computer in our 'Planetarium' demo (2015). Notice the modal switches which trigger different sub-menus on the side of the arm as well as info readouts on the cuff (thanks @randomoutput & @protodeep)

Our second wearable interface (2015) had scrolling, swipe-to-dismiss, tap-to-expand & notifications on the back of the arm. We used a wrist button to summon a multi-level menu system from the hand, which was then anchored in space (props to @builderboy2005 & @keiichiban)

Our third wearable interface (2016) was the most famous, & it was simple. Holding an arm up to expose elements could be tiring, but quickly touching one of three buttons on your hand was fast, easy, comfortable & compelling. It needed no explanation (epic work by @builderboy2005)

Our 4th gen wearable interface (2018) keeps three simple hand-anchored elements, but adds the option for prolonged & complex interaction by pulling elements out of the hand where they transform into space-anchored widgets. Clean, rich & beautiful (crafted by @omonobic)