This document proposes and demonstrates tilting as a new input method for small screen devices. Tilting the device on three axes can be used as input instead of pen or touch interfaces that require two hands. A prototype system uses tilt input combined with buttons. Examples shown include tilting menus for selection and a map browser that allows panning and zooming via tilt. Future work could include more user studies and integrating tilting with other interaction techniques.

1. J u n R e k i m o t o Sony Computer Science Laboratory Inc. Tokyo, Japan Tilting Operations for Small Screen Interfaces

4. The Prototype System LCD Monitor 2 Buttons FASTRAK 3D Sensor (reverse side)

5. Example 1: Tilting Menus Press the button Rotate to select an item Release the button Item #10 is selected 20 deg Item #1 is selected The cylindrical shape of the menu makes the selected menu item larger while showing all items.

6. Tilting Pie-Menu The cursor is fixed at the center of the screen. The pie-Menu moves according to the display’s tilt (the menu can be larger than the screen size)

7. Example 2: A Map Browser Press the button Tilt to select the target point Release the button Fly toward the target Zoom in / out (while pressing the second button) Perspective view of the map to show the current & the destination points