Robotic 6th fingers are nothing new. They can help patients with disabilities to grasp and move items. The hRing is a haptic interface that takes the idea to the next level, allowing patients to control a wearable extra robotic finger and get feedback during the process.
The hRing as a Wearable Haptic Interface for Extra Robotic Fingers
Such a solution makes it easier for users of these robotic fingers to determine the status of each grasping action. More information is available here.
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