Character amnesia is a phenomenon whereby experienced speakers of some East Asian languages forget how to write Chinese characters previously well known to them. The phenomenon is specifically tied to prolonged and extensive use of input methods, such as those that use romanizations of characters, and is documented to be a significant issue in China and Japan. Modern technology, such as mobile phones and computers, allows users to enter Chinese characters using their phonetic transcription without knowing how to write them by hand Whether or not the phenomenon is as widespread or troubling as some have claimed is the subject of debate.