https://dlnext.acm.org/doi/abs/10.1145/2212776.2223676

  • This study aims to achieve a non-intrusive smartphone text input by enabling qwerty input on the back touch panel of a smartphone.
  • Since portrait mode is more commonly used, the upper half of the back of the smartphone is designated as the input space for the keys.
  • As a result, insights were gained regarding issues such as frequent typing errors on certain keys.
  • The lack of haptic feedback is identified as a challenge. #Reference Log