Brain computer interfaces are transforming assistive technology by creating direct communication pathways between the brain and external devices. These systems can help individuals with physical disabilities interact with computers, wheelchairs, prosthetic limbs, and communication tools using brain signals. As research continues to advance, brain computer interfaces are becoming more accurate, user friendly, and adaptable across healthcare and rehabilitation settings. Understanding their functions, benefits, challenges, and future possibilities provides valuable insight into how this innovative technology may improve accessibility, independence, and quality of life for people who require advanced assistive solutions in everyday activities.