We're pleased to see even preliminary industry data demonstrating that our attention to detail is paying off in a better service for OmniSky users. None of these people can do this work well alone. In addition to being expensive, collecting usability metrics interferes with the goal of gathering qualitative insights to drive design decisions. As a compromise, you can measure users' ability to complete tasks. The practical bottleneck is in the human factor.
Eyes can only focus on objects above a certain size.
Fingers can only tap keys accurately if they can strike them individually on cue. We simply teach our employees to see technology through the eyes of a customer. However, the IA's job is to define the structure and behavior of the systems as it is perceived by the user, and these seven deliverables are an excellent way to make sure the IA's thinking is clear and clearly communicated. The more likely scenario is that the customer asks for help finding something, the employee points to the machine and walks away. Specifically, your web site may be designed in a way that doesn't work well for people with colorblindness.