Improvements in technology have allowed the archaic mainframe management information system to be replaced by the local networked personal computers that share a common database. A tool to assist probation staff is the Washington-Baltimore High Intensity Drug Trafficking Area's (HIDTA's) Automated Tracking System (HATTS). HATTS is discussed in this article as an example of how automation fosters interagency case management. Individual case management involves distinctive functions: screening and assessment, treatment, analysis, response, and systems (STARS). Automation provides a seamless system of treatment and supervision processing by integrating STARS concepts as daily functions of the treatment and supervision agencies. HATTS is an automation system that fosters the use of seamless system case management functions. Improved technology has contributed to the implementation of information systems that can be used by multiple agencies. For the offender in treatment, case management provides the bridge between the criminal justice and treatment systems. A table compares seamless system components with HATTS screens and functional components. 5 references