Bionic hands are advanced prosthetic devices designed to replace a missing or non-functional hand. They use technology to mimic the movements and functions of a natural hand, allowing users to grasp, hold, and manipulate objects. These devices often incorporate sensors and motors that respond to muscle signals from the user's arm, enabling more intuitive control. Many bionic hands are equipped with features like grip strength adjustment and touch sensitivity, enhancing their usability. Some models even connect to smartphones for customization. Innovations in materials and design continue to improve the comfort and functionality of bionic hands, making them more accessible for individuals with limb loss or impairment.