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In the next generation network (NGN), various kinds of advanced smart mobile terminals will be used for various communication services. We believe that text typing on small mobile devices will become more popular than it is today and also necessary for developing countries such as Myanmar (Burma), Cambodia and Bangladesh etc. In these countries, however, there is no proper or easy text input method for mobile devices yet. Positional gesture text input is a novel concept of text input for syllabic scripts like Myanmar, Khmer and Bangla languages. Text input of syllabic scripts poses a unique challenge because many syllabic characters are formed by combinations of consonants, dependent vowel signs, tones and subscript consonants etc. And thus, text input for syllabic scripts is still difficult even with PC keyboards. In this paper, we propose very simple gesture recognition for syllabic scripts text input based on their writing natures. It is accessible even for first time users and applicable for many mobile computing devices such as tablet PCs, mobile phones, PDAs and portable game players etc.