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- + Partial use of the screen for adding new posters reduces mode errors which would be otherwise encountered by utilizing the full screen
- + Use of confirmation dialog to prevent deletion of posters accidentally
- - Availability of several view modes may result in mode errors for some event-goers
- - Mitigation required to prevent users from accidentally removing poster from all boards if they are used to removing from a single board
- - Lack of explicit undo/edit requires the deletion and recreation of events
- - New poster's arrival may be obscured if there are lots of other posters (could be mitigated with a confirmation message)
Design 2
Modes of access: Website for adding and removing posters, electronic poster boards for viewing and interacting with poster board
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- + Lack of deletion means things become "deleted" through irrelevance
- - Availability of several interfaces may result in coordination errors
- - Presence of multiple QR codes may be confusing to viewers and possibly also to capture hardware
- - Use of border color to indicate grouping is not accessible to colorblind users (could be mitigated by utilizing specific color groups)