A bionic arm is a type of prosthetic device designed to replace a missing or non-functional arm. It uses advanced technology, including sensors and motors, to mimic the natural movement of a human arm. Bionic arms can be controlled by the user's muscle signals, allowing for more precise and intuitive movements. These devices often incorporate features like grip strength adjustment and the ability to perform various tasks, such as holding objects or typing. Some bionic arms are even equipped with robotic components that enhance functionality, making them valuable tools for individuals with limb loss or disabilities.