Low-tech AAC - Any type of aid that does not require batteries or electricity. This includes things like a simple pen and paper to write messages on, as well as pictures boards, that can be carried to aid communication. On picture boards, users can point to images, words, pictures, drawings, or letters in order to communicate their message. The pointing might be done with the user's hands, other body parts, eye gaze, or a pointer held in the hands or mouth.