Jakob Nielsen, Ph.D., is a retired principal and co-founder (with Dr. Donald A. Norman) of the Nielsen Norman Group. Jakob established the "discount usability engineering" movement for fast and cheap improvements of user interfaces and invented the heuristic evaluation method.
Japan is now shipping a wide variety of new Internet-connected devices. Among the highlights are new mobile photography units like Eggy, and i-mode telephones with liberating two-dimensional controls.
According to a recent critical incident analysis, users' most important Web tasks involve collecting and comparing multiple pieces of information, usually so they can make a choice.
Corporations spend millions on PR, and yet the press sections of their websites often fail to meet journalists' most basic information needs. In our recent usability study, journalists found answers to only 68% of their questions across a range of corporate sites.
Mobile Internet access will free us from having to connect appliances to telephone jacks and will make smart devices much easier to install. In fact, they may not need a user interface at all, as exemplified by the Japanese i-pot.
Never listen to what people say in response to a survey: asking high-tech employees what will keep them in their jobs provides very different answers than the factors that actually drive retention.
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. Success rates are easy to understand and represent the UX bottom line.
Opponents of the usability movement claim that it focuses on stupid users and that most users can easily overcome complexity. In reality, even smart users prefer pursuing their own goals to navigating idiosyncratic designs. As Web use grows, the price of ignoring usability will only increase.
Although measuring usability can cost four times as much as conducting qualitative studies (which often generate better insight), metrics are sometimes worth the expense. Among other things, metrics can help managers track design progress and support decisions about when to release a product.
