Hackberry portal › Forum › HACKberry › FAQ › How does the index finger move? This topic contains 0 replies, has 1 voice, and was last updated by Hiroshi Yamaura 3 years, 1 month ago. Viewing 1 post (of 1 total) Author Posts 2015年8月26日 at 11:18 AM #325 Hiroshi YamauraKeymaster Please check this video. The index finger is normally straight but it bends when an object touches its proximal phalanx. This mechanism enables users to choose pinching or grasping intuitively. This topic was modified 3 years, 1 month ago by Hiroshi Yamaura. Author Posts Viewing 1 post (of 1 total) The forum ‘FAQ’ is closed to new topics and replies.