It is generally agreed that the first publication advocating privacy was the article by Warren and Brandeis, The Right to Privacy, 4 Harvard L.R. 193 (1890). However, the codification of principles of privacy law waited until Prosser, Privacy, 48 Cal.L.Rev. 383 (1960), which Prosser subsequently entered into the Second Restatement of Torts at §§ 652A-652I (1977).
Early invasions of privacy could be treated as trespass, assault, or eavesdropping. Part of the reason for the delay in recognizing privacy as a fundamental right is that most modern invasions of privacy involve new technology (e.g., telephone wiretaps, microphones and electronic amplifiers for eavesdropping, photographic and video cameras, computers for collecting/storing/finding information).
The most obvious protection of privacy in the Bill of Rights is the Fourth Amendment, which protects individuals in their persons, homes, papers, and effects from "unreasonable searches and seizures" by the government. The First Amendment, which protects freedom of religion, speech, press, and assembly, also implicitly safeguards the right to privacy in the form of freedom of thought and intellect.�
The first Supreme Court decision to fully articulate the right to privacy was Griswold v. Connecticut, which held that the right to privacy included the right for married couples to use contraceptives.