There are many systems that can be used with children.
Sign language is a gestural system which is widely used in the deaf community.
ASL uses a shortened version of English with a different word order than spoken English. SEE uses additional signs for word endings such as tenses, and follows the exact pattern of spoken English. Eye gaze boards are often used with nonverbal children. The pictures may be photographs of the child, people, objects, and activities. They can also be used around the house or on containers, toy bins, or boxes.