Electronic Monitoring is a type of surveillance in the United States that uses technology to keep track of people. It can be used for people who have been arrested or convicted of a crime, to make sure they follow the rules that the court has given them. For example, if someone is supposed to stay away from a certain area, an electronic monitor can be used to make sure that they stay away. Electronic monitors can also be used to make sure that people don't leave their homes at certain times or talk to certain people. The device tracks their movements and sends information back to monitoring authorities.