I'm seeing a lot of tech demos lately that feature the user of an AR or VR system using a pinch in air or point in air gesture. I'm wondering where this convention came from. For touchscreen gestures, I know microsoft did a bunch of research in the early 2000s to create a taxonomy, but I haven't found anything for AR / VR. Thanks for the help.
Qualcomm did a lot of research into gestures for their AR platform (that they have since sold off). This included pinch gestures. If i remember correctly it was because their system could recognise digits plus it was to be used infront of a mobile phone camera.
Their research was augmented by knowledge shared from Microsoft Research.