Assistive technology refers to devices that help people with disabilities perform tasks. This includes low-tech devices like pencil grips and magnifiers as well as more advanced technologies like computers, braille displays, and voice recognition software. Schools are required by law to provide assistive technologies that can help students with disabilities learn. Examples of assistive technologies for different disabilities include FM systems for the hearing impaired, reading machines and braille devices for the visually impaired, and switches or eye-tracking for students with physical disabilities.