1.  Copyright 2006 Digital Enterprise Research Institute. All rights reserved. www.deri.ie 1 Tools and Terms for Annotation-Based Access Control Peyman Nasirifard 16/07/2008 DERI Conference Room

2. 2 PLEASE BE AS TOUGH AS YOU CAN! –I NEED YOUR CRITICISM. Expectation

3. 3 Who Am I? –I don‘t know! Tag me! Who is my supervisor? –supervisor –wearGlasses –wearJeans –wearRedTShirt –Cool –Smiling Who do I know? –The people tagged as „Participants“ Do you know me?

4. 4 Hello and Welcome Some slides Some demos Questions Annotate your friends Lottery Have a nice day! Outline

5. 5 Current Access Control Sharing data/resources: –Shared Workspaces (BSCW,NetWeaver, SharePoint, etc.) –Social Networking Sites (Flickr, YouTube, del.icio.us, etc.) Sharing needs access control Current approaches: –Access control lists (email contacts) –Role-based access control (root, admin, user) –Social-based access control (friend, knows)

6. 6 Problems with Current Access Control Problems with current approaches: –Coarse-grained: Private vs. Public, share with ‘friends‘ –Fixed vocabulary, no flexibility –Too complex? Result of current approaches: –Messaging, email To move from messaging to sharing: –Social-awareness based access-control

7. 7 Real-Life Access control We share resources based on social relationships we attribute to people –We may share our credit card details with our parents, but not with out friends. We mentally annotate people, meaning of term may differ between people –parent, supervisor, friend, close friend, director, etc. Real life model can be applied to online model –Annotation-Based Access Control more natural and flexible

8. 8 Annotation-Based Access Control Model

9. 9 Demo Demos

10. 10 Object-centric to user-centric

11. 11 Future Work Extend the model to include context-aware information, as opposed to user-defined. Using the Open Social API, embed the uncle-share widget into social networking sites, such as MySpace or Xing. Integrate Uncle-Share with social bookmarking systems, such as del.icio.us

12. 12 Annotate your friends Name 5 of your firends and annotate them with 3 desired annotations –Do not use bald, fatso, ugly, beautiful, etc. –Use Collaboration-based term: researchWith, wirtePaperWith, etc. –Do you find it difficult or easy?

13. 13 Have a nice day! Thanks for your time and attention!