Robotic ‘Third Thumb’ expands hand’s range of motion, carrying capacity | Study showed, 98 percent of participants successfully manipulated objects with the Third Thumb, with only 13 unable to perform
pressure from the right toe pulls the Thumb across the hand, while the pressure exerted with the left toe pulls the Thumb up toward the fingers. By applying pressure with their toes, users can move the Thumb across their hand or up toward their fingers.