In scanning input, a light or cursor scans letters and symbols displayed on the screen or an external device. Individuals activate switches to make selections. Special adaptive hardware and software translate Morse code into a form that the computer understands so that standard software can be used. Voice input provides another option for individuals with disabilities. Speech recognition systems allow users to control computers and provide input by speaking words and letters.
Special software can further aid the mobility impaired.
For example, word prediction software can anticipate entire words after several keystrokes thereby increasing the input speed of those with mobility impairments. On-screen help can provide efficient access to user guides for those who cannot turn pages of a book. Computer Assistance for Individuals with Visual Impairments Computing facilities can assist visually impaired users by providing instruction sheets, signs, and labels on equipment and support materials in large print and Braille. Anti-glare screens can make screens easier to read. In addition, special equipment and software can enlarge text and graphics on monitors and printers.