Assistive technology (AT) is any item, piece of equipment, software program, or product system that is used to increase, maintain, or improve the functional capabilities of persons with disabilities.

• AT can be low-tech: communication boards made of cardboard or fuzzy felt or high-tech: special-purpose computers.

• AT can be hardware: prosthetics, mounting systems, wheelchairs, walkers, braces, and positioning devices or computer hardware or software: special switches, keyboards, screen readers, eye gaze systems, communication programs, and pointing devices.

• AT as part of UDL (Universal Design for Learning) can be inclusive learning materials and curriculum aids.

• AT that is required to make progress can be identified as an accommodation