This document proposes a multi-device approach for improving digital whiteboard interactions. It involves using a wall-sized display combined with palmtop computers to address issues with traditional single-screen whiteboards. Users can pick and drop digital objects between the wall display and their palmtop using wireless networking. They can also use a physical toolglass palette on the palmtop to select attributes and paste objects from a personal buffer onto the shared whiteboard display. This allows for more flexible and collaborative drawing and interaction among multiple users.

1. A Multiple Device Approach for Supporting Whiteboard-based Interactions Jun Rekimoto Sony Computer Science Laboratory Inc April. 23, 1998

3. Problems with current digital whiteboard ( wall display ) Design File Edit View Label Special Menubar and Toolbox are physically out of reach Text entry is difficult Handling of existing data is difficult Multiple Users

6. GUI-based solution… File Edit View Label Special

7. A Multi-device Solution Text Palmtop Computers Pick-and-Drop

8. Wall-sized Display + Palmtop Computer

9. Wireless network Tool palette Personal work buffer

10. Pick&Drop, Dip&Draw Drop Pick

11. Collaborative Drawing

12. Position sensor Buttons for item selection

14. Selecting & Pasting Digital Data Free-hand Drawing

15. Video (4min)

16. System Configuration Network Wall Size Display PDA (Palmtop PCs) ID Data 1 xx.gif Pen Manager Pen ID = 1 Pen ID = 2

17. Pen IDs

18. Collaborative Drawing User Activity Patterns Palmtop1 Palmtop2 Time Pen Taps Pick&Drop Overlapping Pick&Drop User1’s Activities User2’s Activities Whiteboard