While Zhuyin is not a mainstream writing system, it is still often used in ways similar to a romanization system, for aiding pronunciation and as an input method for Chinese characters on computers and cellphones.
wˌaɪl ʒˈaɪɪn ɪz nˌɑːɾə mˈeɪnstɹiːm ɹˈaɪɾɪŋ sˈɪstəm, ɪɾ ɪz stˈɪl ˈɔfən jˈuːzd ɪn wˈeɪz sˈɪmɪlɚ tʊ ɐ ɹˌoʊmɐnᵻzˈeɪʃən sˈɪstəm, fɔːɹ ˈeɪdɪŋ pɹənˌʌnsɪˈeɪʃən ænd æz ɐn ˈɪnpʊt mˈɛθəd fɔːɹ tʃaɪnˈiːz kˈæɹɪktɚz ˌɔn kəmpjˈuːɾɚz ænd sˈɛlfoʊnz.