PrivacyTag: A Community-Based Method for Protecting Privacy of Photographed Subjects in Online Social Networks

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10595)


Online social networks, such as Facebook, have become popular with people of all ages, and online communication with friends and acquaintances via messages that include photos has become very common. With the increasing ease with which users can take and post photos, the unintentional disclosure of sensitive information of various kinds through mistakes made while posting has become a problem. In this work, we focused on the privacy of people appearing in photos and developed a method called “PrivacyTag” for adaptively blurring their facial area in accordance with the communities to which they belong by using tags embedded with community-based privacy policies. We also evaluated a newly designed privacy tag and developed a prototype application for Facebook that uses this tag.


Photo Privacy Privacy tag Online social network 



This work was supported by JSPS KAKENHI Grants (JP16H06302 and JP15H01686).


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Copyright information

© IFIP International Federation for Information Processing 2017

Authors and Affiliations

  1. 1.SAP JapanTokyoJapan
  2. 2.SBA ResearchViennaAustria
  3. 3.National Institute of InformaticsTokyoJapan

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