Forensic linguistics is a branch of applied linguistics that uses various linguistic methods in forensic context, usually in legal practice. The phrase was first used in 1960s by a linguist Jan Svartvik, who used its methods to study the statements in the case of a man falsely accused for murdering his wife and child. Since then, it has become quite common to use forensic linguistics in court of law. It is used in contract disputes, product liability, child sexual abuse interviews, perjury, adult sexual misconduct, money laundering, confessions, police interrogations, etc.Forensic phonetics is a forensic discipline that deals with analyzing spoken language. It is also used in courtrooms, namely in speaker identification and signal analysis- analysis of already recorded speech. Speaker identification has been known to play a key role in many trials, but it can be unreliable when it is done by an ear witness rather than by an expert. In signal analysis it is also important to work with a recording of good quality.Contrary to that, forensic stylistic does not face those problems since it focuses primarily on the written language. Forensic stylistics has found its widest usage when dealing with questioned authorship and when trying to detect plagiarized works.