This paper by Marc Langheinrich, from the Distributed Systems Group at ETH Zurich, aims to introduce privacy issues in the context of ubiquitous computing. It outlines six principles for designing privacy-aware systems: notice, choice and consent, proximity and locality, anonymity and pseudonymity, security, and access and recourse. The introduction highlights the minimal impact of privacy on ubiquitous computing, despite its relevance, and attributes this to the field's infancy and the complexity of privacy as a social and ethical issue. The paper provides a brief history of privacy, its legal status, and its utility, emphasizing how technological advancements have shaped privacy concerns over time. Key historical milestones include the 19th-century "Right to Privacy" paper by Samuel Warren and Louis Brandeis, the 1960s data protection laws in Europe, and the recent focus on privacy in the age of the Internet. The paper also traces the evolution of privacy from media privacy to territorial, communication, bodily, and information privacy.This paper by Marc Langheinrich, from the Distributed Systems Group at ETH Zurich, aims to introduce privacy issues in the context of ubiquitous computing. It outlines six principles for designing privacy-aware systems: notice, choice and consent, proximity and locality, anonymity and pseudonymity, security, and access and recourse. The introduction highlights the minimal impact of privacy on ubiquitous computing, despite its relevance, and attributes this to the field's infancy and the complexity of privacy as a social and ethical issue. The paper provides a brief history of privacy, its legal status, and its utility, emphasizing how technological advancements have shaped privacy concerns over time. Key historical milestones include the 19th-century "Right to Privacy" paper by Samuel Warren and Louis Brandeis, the 1960s data protection laws in Europe, and the recent focus on privacy in the age of the Internet. The paper also traces the evolution of privacy from media privacy to territorial, communication, bodily, and information privacy.