The preferable keypad layout for ease of pressing small cell phone keys with the thumb

Satoshi Muraki1, Keiichi Okabe, Tetsuji Abe

  • 1Department of Human Science, Faculty of Design, Kyushu University, 4-9-1 Shiobaru Minami-ku, Fukuoka 815-8540, Japan. muraki@design.kyushu-u.ac.jp

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