A Pattern Collection for Privacy Enhancing Technology

Patterns are a useful approach to describe, organ ize and present solutions and best practices for design problems. Although much work can be found concerning either patterns or privacy, work focusing on patterns for Privacy E nhancing Technologies (PET) is very rare. This paper describ es the development of User Interfaces Patterns for PET and the benefit of using them. We used different proven app roaches and guidelines and merged them for creating efficient and useable patterns for PETs. Anyhow, some of our patterns were not tested much with end-users, so further tests wi ll be necessary to prove worth of the patterns. Neverthel ess we maintain that our patterns will support the develop ment of PET UIs. In this paper, we provide a short overview of the whole pattern collection and present two patterns i n detail.