The Usability of Urinals (07 Apr 2006)
In fact, even if we restrict the problem space to just urinals that are equipped with infrared sensors to detect usage and automatically flush, there are still issues to consider.
First, these sensors must indicate when they are activated. This is in keeping with the heuristics of feedback and expectation. The user must not only be aware of what the device is for (now less of a problem as they have become commonplace) but also be informed of when it is active. The latter can be accomplished with a simple light.Add this article to Del.icio.us