The right to be "let alone" with some personal "zone of privacy" has had the longest history within the U.S. legal system. This understanding of privacy is traced to and 1890 Harvard Low Review article by Samuel Warren and Louis Brandies. Warren and Brandeis argued that increasing population and technological advance (e.g.,photo journalism) were increasing the threat to "be let alone" Seventy-five years later in Griswold v. Connecticut the U.S. Supreme Court relied on a similar understanding in recognizing a Constitutionally guaranteed right to privacy. This case invalidated a Connecticut low that prohibited the use, sale, and prescription of contraception.