Electronic monitoring devices and data processing

Sometimes criminal justice authorities may wish to control or monitor the location of an individual without resorting to imprisonment. As a condition of bail, bond, sentencing, or probation, the judge may order the convicted person to wear an electronic monitoring device, or ankle monitor. An electronic monitoring device allows pretrial services, probation, or parole the chance to closely supervise the convicted person by keeping track of where person is, or in some cases, determine if the convicted person is consuming some prohibited substances such as alcohol or narcotics. Some systems provide tracing within the predefined restricted areas. Such systems are in use for different situations, before a criminal trial or after conviction. Authors described different ankle monitor systems in use, their advantages and disadvantages and data they collect. Some data from electronic monitoring device are important for each convicted person. The authors describe machine learning method, which can rely on data to predict whether the convicted person will repeat the criminal offense or not. This method uses the hypothesis and gradient descent. At the end, the authors explore the role of these devices by the law enforcement sanctions and measures outside the prison.