The Flat Finger: Exploring Area Touches on Smartwatches
summary
A custom 33 mm square sensor with a 7x7 capacitive grid samples at 40 Hz and records proportional capacitance; the study evaluates 31 area touches with 20 participants and contrasts them to standard 2x2/3x3 targeting. Static area touches average ~400 ms and feel fast and suitable for shortcuts; dynamic touches take ~1–1.2 s, comparable to normal targeting. Two-thirds of touches use a flat finger, two-finger gestures use index+middle, error rates vary widely, and classification is a simple if‑statement, leaving room for better algorithms.
AI-written summary · about
chapters (7)
- 0:00Introduction and motivation
- 3:18Limitations of smartwatch input
- 6:05Custom hardware design
- 9:57Study on area touch production
- 16:41Designing interactions with area touches
- 20:51Limitations and future work
- 21:12Q&A
related talks
19mPredicting Finger-Touch Accuracy Based on the Dual Gaussian Distribution Model
17mPointing Forward (updated)
18mGetting Touchy Feely with the Mobile Web
12mTouchscreens in Motion: Quantifying the Impact of Cognitive Load on Distracted Drivers
16mCharacterizing Latency in Touch and Button-Equipped Interactive Systems
17mJetto: Using Lateral Force Feedback for Smartwatch Interactions
19mInvestigating the Use of Spatial Interaction for 3D Data Visualization on Mobile Devices
44mDeveloping for touch