Apparatus and method for generating a chronological timesheet

The present invention relates to an improved method of generating a passive chronological timesheet for users of computing devices having a graphical user interface. A computer implemented method for generating a chronological timesheet for a computing device user over a given time period is provided, the method comprising the steps of receiving a set of user activity data records associated with a user identifier for time period, each user activity data record containing a time representation including duration value and descriptive element of action performed by user on computing device during time representation; applying a high-pass filter to the set of user activity data records to form a filtered set of user activity data records; creating an expanded set of user activity data records, wherein the duration value of the user activity data records is greater than the corresponding user activity data record of the filtered set of user activity data records, and whereby aggregate of duration values of the filtered set of user activity data records is less than or equal to the duration of the given time period.