ABSTRACT
Information systems are supposed to help, but very often end users regard a new system as more of a hindrance than a help. There are many explanations why users would find an information system an obstacle in getting their work done. One is that the system does not perform the tasks users must do to accomplish their work. Another common reason is that the systems are just too difficult to use. The importance of usability in a product can be described in economic terms. A large amount of compelling economic data indicates that usability is an investment that pays for itself quickly over the life of the product. When one goes to the store to purchase a piece of software for personal use, one has the right to refuse any application that does not appear to meet one’s needs — including subjective preferences. Building usable systems is based on a gradual progression from “lo-fidelity” paper-and-pencil-based prototypes to “hi-fidelity” working systems.
