Ultra-Low-Power Mode for Screenless Mobile Interaction
summary
A working Ultra-Low-Power Mode modifies Android 7 on Nexus 5 and 6P to keep selected apps active, patches the modified hardware composer, and renders a tailored keyboard that preserves QWERTY layout, replaces removed keys with gestures, adds audio feedback and a tuned autocorrect. Measurements show up to 60% power savings for text tasks and ~40% for camera/video, users achieve 30+ WPM, <10% error, and video centering averages 0.9% image offset, demonstrating feasible screenless interaction.
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chapters (10)
- 0:00Introduction and motivation
- 1:31User needs at low battery
- 2:35Goal of Ultra-Low-Power Mode
- 4:48Screenless interaction concept
- 6:16Keeping phone interactive
- 8:24Screenless text entry design
- 11:36Implementation and evaluation
- 12:41User study results
- 14:08Conclusion and future work
- 14:51Q&A session
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