Touch Screens

Precise Selection Techniques for Multi-Touch Screens By: IQxplorer

Selecting a small target is very HARD! CHI 2006

Small target size comparison ,[object Object],CHI 2006 Target UI element Width (abstract screen) Width 17” screen 1024x768 Width 30” screen 1024x768 Close button 18 pixels 6 mm (40% of finger) 10.8 mm (66% of finger) Resize handle 4 pixels 1.34 mm (9% of finger) 2.4 mm (16% of finger)

Touchscreen Issues ,[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Previous Work ,[object Object],[object Object],CHI 2006 Sears, A. and Shneiderman, B. “High Precision Touchscreens: Design Strategies and Comparisons with a Mouse.” (’91)

Dual Finger Selections ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Simulating Hover State ,[object Object],[object Object],[object Object],[object Object],CHI 2006

SimPress (Simulated Pressure) ,[object Object],[object Object],[object Object],[object Object],CHI 2006

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],SimPress Cursor Placement CHI 2006

Dual Finger Offset CHI 2006 ,[object Object],[object Object]

Dual Finger Midpoint CHI 2006 ,[object Object],[object Object],[object Object],[object Object]

Dual Finger Stretch ,[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Dual Finger Stretch CHI 2006 ,[object Object]

Zooming Comparison ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Dual Finger X-Menu ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Dual Finger X-Menu with Magnification Lens CHI 2006

Dual Finger Slider CHI 2006 Normal Slow 4X Slow 10X Freeze Snap

Multi-Touch Table Prototype ,[object Object],[object Object],[object Object],CHI 2006

User Experiments ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Part 1: SimPress Evaluation ,[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006 F (4,44) =62.598, p<0.001

Part 2: Comparison of 4 Dual Finger Selection Techniques ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Part 2: Error Rate Analysis ,[object Object],CHI 2006 F (6,66) = 8.025, p<0.001

Part 2: Error Rate Analysis CHI 2006 ,[object Object],F (9,99) =29.473, p<0.001

Part 2: Movement Time Analysis ,[object Object],[object Object],[object Object],CHI 2006 Missing

Subjective Evaluation ,[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Conclusions and Future Work ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CHI 2006

Multi-Touch Tabletops ,[object Object],[object Object],[object Object],CHI 2006

ANOVA Table CHI 2006 Source df F p Noise (N) (2,22) 20.24 <0.001 Technique (T) (3,33) 169.14 <0.001 Width (W) (3,33) 150.40 <0.001 N x T (6,66) 8.03 <0.001 T x W (9,99) 29.47 <0.001 N x W N x T x W

Touch Screens

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