Approach to problem solving, library for transliteration from Unicode symbols to Latin

Question

I need to resolve the following task: I have registration forms which not allow to use Non-Latin characters and I need to transliterate from Non-Latin characters to Latin characters. Could you, please, tell me approach to this task solving or library for transliteration from Unicode symbols to Latin? I need to transliterate form Unicode symbols for the following languages: Arabic, Armenian, Bengali, Tibetan, Myanmar, Khmer, Chinese (simplified), Chinese, Ethiopian, Devanagari, Georgian, Greek, Hebrew, Hiragana, Katakana, Kanji, Thaana, Hangul, Hanja, Tamil, Sinhala, Thai to the Latin symbols. Thank you.