Abstract
As a result of the popularity of using HyperCard® to rapidly prototype equipment and computer interfaces on Macintoshè personal computers, the need ensued to evaluate prototype usability by collecting subjects' interactive performance data in real time. Sandia National Laboratories, in collaboration with Stone Design Software, has developed ProtoTymer2, a HyperCardè stack that can time and record users' interactive sessions with prototypes developed using HyperCardè. While operating in the background, ProtoTymer records the times, locations, and targets (objects clicked) of a subject's inputs during an interactive session. At the conclusion of the session, the resultant data file can be reviewed, summarized, printed, or transferred to a spreadsheet for statistical or graphical analysis. This paper describes ProtoTymer's design approach, features, limitations, and considerations for future versions.
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