Electronic tagging, commonly known as ankle monitoring, is a technology used to track the location and activities of an individual under surveillance. There are several synonyms for electronic tagging, including GPS tracking, cellular tracking, and radio frequency monitoring. The term "bracelet tracking" is also used to describe ankle monitoring, as the device is worn like a bracelet around the ankle. Electronic monitoring is often used in the criminal justice system to monitor offenders on house arrest or parole. The technology has also been utilized in wildlife research to track the movements of animals in their habitats. Despite controversy over privacy concerns, electronic tagging continues to be an essential tool in tracking and monitoring individuals.