Free-Form Annotation Tool for Collaboration

The people often establish taking notes on reading and browsing activities; hence annotation is being very important in human life in anytime and anywhere. We developed a free-form annotation tool for collaboration that provides a convenient way to create annotation easily. Our approach is characterized by two design criteria, including: 1) digital ink annotation: help users to focus on annotated concept or specified sentence on reading and browsing a web page; 2) IM-based annotation discussion board: help users to discuss sharing digital ink annotation based on each one's aspect in an efficient manner.