Researchers at Keio University in Japan have developed a wearable robotic tail designed to help elderly people maintain balance, inspired by how animals use their tails for stability.
The device, called Arque, is about one meter long and attaches to the waist using a harness, working like a pendulum to counter body movement.
Researcher Junichi Nabeshima explained that when a user tilts, the tail automatically moves in the opposite direction to help restore balance. The system uses four artificial muscles powered by compressed air and can move in eight different directions.
Beyond elder care, the team is also testing industrial applications, such as helping workers stay balanced while carrying heavy loads.
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