LOCKUP provides a tool for improving the quality of information maintained on inmate populations and facility status. It provides an efficient means for recording and maintaining accurate and up-to-date information by computerizing data collection and maintenance of all jail recordkeeping from inmate booking through release. The system incorporates automatic edit capabilities, thereby ensuring the accuracy of information prior to storage. It provides a means for satisfying local, State, and Federal reporting requirements. A full range of jail management reports are preprogrammed to be available on demand, and an ad hoc reporting capability provides administrators with a means for generating an unlimited number of additional reports. LOCKUP runs on IBM and compatible computers on a variety of microcomputer-based networks. It was developed under the dBase III Plus data base management system. Designed for use in small- to medium-sized jails, it is to be used by staff as an integral part of the day-to-day recordkeeping routine.