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- Visibility
- Some options like the command menu are accessible only from the Menu option, which might cause visibility issues. This issue arises for some of the graphing screen's more advanced features as well.
- Most data is displayed early and quickly, so data visibility is high.
- Efficiency
- The drill-down aspect of the interface may not be the most efficient, but we expect that it is worth the organizational and learnability benefits.
- Error Prevention
- The only serious errors that can occur with the application is in the command screen. As the interface stands, commands are sent on finger-up, but if testing reveals that this is an issue, we will likely add a Confirm button.
*Learnability
- Most things are clickable in this interface, so learnability should be relatively easy. The graph mode has a few features that novice users are not likely to know about, but that is more a visibility issue.