1. The document discusses technologies for communication, specifically augmentative and alternative communication (AAC) devices for people with communication impairments. 2. It describes different types of low-tech and high-tech AAC devices, including their input and output features like keyboards, displays, vocabulary coverage and portability. 3. Occupational therapists work with speech therapists to determine the best AAC device and customize it based on a person's motor and visual abilities to maximize their communication abilities.