TipText: Eyes-Free Text Entry on a Fingertip Keyboard
summary
An invisible QWERTY-derived keyboard sits on the first segment of the index finger and accepts thumb‑tip taps; layout search simulates a probabilistic decoder over 1,146,484 layouts and finds a compact 2×3 grid that preserves QWERTY spatial order. Sensing uses Vicon + Unity for capture and an APC prototype for evaluation. Twelve participants average 11.9 WPM (peak ≈13.3 WPM); tattoo hardware is feasible but the robust prototype yields modest speeds and errors that improve with practice.
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chapters (11)
- 0:00Introduction
- 1:13What is TipText
- 3:00Motivation for micro gestures
- 4:07Keyboard layout challenges
- 7:01User study for QWERTY layout
- 9:07Grid layouts investigation
- 11:18Optimal keyboard layout results
- 12:01Prototype development
- 12:42User evaluation results
- 14:07Future work and conclusions
- 15:57Q&A session
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