The document discusses assistive technology, what it is, why it is necessary, and common types. It defines assistive technology as any item or equipment that helps individuals with disabilities increase, maintain, or improve their functional abilities. Assistive technology is needed as a bridge between what abilities people have and what they want to do but can't due to disabilities. The document also discusses universal design and lists common types of assistive technology, including for communication, computer access, education, mobility, and recreation.