Monitoring identity of computer users accessing data bases, and storing information about the users and the accessed data base

摘要

A monitoring technique for identifying users who access a particular data base. A unique code is precoded in each of the data bases being monitored. When access to a data base is designated by the user, the precoded portion therein is read to retrieve the code. If the retrieved code matches any of the codes stored in memory for data bases which are being monitored, the existence of a match actuates a trigger signal source which is part of a stationary unit. The source emits a trigger signal from the stationary unit which is received by a portable unit, such as a watch, worn by the user. The watch responds to the received trigger signal by emitting an ID signal unique to its associated user. That ID signal is detected and stored by the stationary unit.