The special switch was installed along with a computer screen on the front of a wheelchair. Whenever Fu-hua wants to "speak," she first mentally converts the corresponding phonetic symbols into Morse code, and then uses her face to slowly press the joystick, entering the symbols one by one. The screen displays words and plays the sounds, to give her a chance to confirm.
這個特殊開關連同電腦螢幕一起安裝在輪椅前方，馥華想「說話」時，先在腦中將注音符號轉為摩斯碼，再以臉部慢慢觸碰搖桿，一個一個拼出來，而螢幕上除顯現單字外，也會發出讀音，好讓馥華確認。