WallShare: a multi-pointer system for portable devices

WallShare introduces a new system to improve the collaboration possibilities among the participants in face-to-face meetings and working groups. It defines an novel interaction device and platform to develop collaborative applications. The system provides a shared zone displayed by a projector over a wall. Through their cursors and mobile devices users are capable of post notes and messages, and sharing files, such as documents, images, etc. This article also exposes a preliminary usability evaluation of WallShare showing the effectiveness, productivity and satisfaction of users.