Voiceprint identification is a popular security tool that uses an individual's unique vocal characteristics to verify their identity. There are several terms that can be used interchangeably with voiceprint identification, including voice authentication, speaker verification, voice biometrics, and voice recognition. These terms all refer to the same technology, which analyses various aspects of a person's voice to create a profile that can be used for identification purposes. Voiceprint identification systems are used in a variety of contexts, from phone banking and password resets to law enforcement investigations and national security applications. Given the increasing use of voice assistants and smart home devices, voiceprint identification is likely to play an even greater role in personal security in the years to come.