Technology companies and rights groups are preparing to fight the Federal Bureau of Investigation again over privacy rights. The federal government and technology companies have argued many times about the meaning of the Fourth Amendment to the U.S. Constitution. The amendment says, “The right of the people to be secure in their persons, houses, papers and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause” U.S. Supreme Court Justice Louis Brandeis, who died in 1941, called privacy “the most comprehensive of rights, and the right most valued by a free people.” The latest dispute about privacy is about the Electronic Communications Privacy Act, or ECPA. That law took effect 30 years ago. It limits the government’s access to electronic communications and other information. Since the act was passed in 1986, there have been many changes in technology. The act is now considered outdated by many people.