The Unifon alphabet, which was created by John Malone in 1959, is an alternative way of writing English based on the principle of one letter per phoneme. The name means "one sound". It is intended as a transitory alphabet to help children to learn to read English. Once they became proficient with Unifon, they would be introduced to the regular English alphabet and all the irregular spellings. It could also be used as a pronunciation key in English dictionaries. Unifon has few supporters and is not widely used.
Further information about the Unifon alphabet (includes a Unifon font)