Cued Speech was developed by Dr. R. Orin Cornett in 1966. Cornett devised manual signals that are delivered along with non-manual signals (i.e., information on the mouth) to render traditionally spoken languages unambiguously in a visual channel. Handshapes represent consonant phonemes. Placements and movements represent vowel phonemes. Cued Speech has been adapted to more than 50 languages and dialects.