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11 Examples of Usability Requirements

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Usability requirements are documented expectations and specifications designed to ensure that a product, service, process or environment is easy to use. Requirements can be provided in a broad variety of formats by business units, customers and subject matter experts. The following are illustrative examples of usability requirements.

Learnability

Learnability requirements may be initially captured with customer expectations such as "I just want it to work when I plug it in." If accepted by business units, such general statements can be used as principles that guide more detailed specifications.

Performance

The performance of users in completing a task. For example, 99.5% of users will be able to able to perform an international bank transfer with the banking app the first time without assistance.

Productivity

If a user interface is used repeatedly by customers or employees in their work they may be primarily concerned with productivity requirements. For example, "As a production manager, I want to be able to see the status of all workstations in one screen."

Accessibility

Requirements that things be useful to as broad a group of people as possible including people with disabilities. For example, "A can of coffee so easy to open and reseal that you can do it without using your hands."

User Friendliness

Requirements that things be delightful to use. For example, a baby stroller that is easy to seal against hard rain within 20 seconds.

Error Tolerance

Requirements that things be difficult to get wrong. For example, a chair that is assembled by customers may have the requirement that it be impossible to fit parts together incorrectly.

Information Scent

Requirements that information and tools be easy to find. For example the customer requirement that a user interface avoid "cryptic icons that are too abstract and meaningless."

Undo

Requirements for a safe environment where users can try things that are possible to undo.

Flow

Requirements that users be able to flow through tasks without being interrupted. For example, a customer requirement for a banking website such as "As a customer, I want to logon without popup offers and information that don't apply to me."

Customization & Personalization

Requirements to customize or personalize things for the user. For example, the customer requirement that they would like to customize the layout of menus.

User Engagement

User engagement related requirements such as environments that are fun and stimulating. For example, the requirement that 95% of customers rate a tool as fun to use.
Overview: Usability Requirements
Type
Definition
Documented expectations, targets and specifications designed to ensure that a product, service, process or environment is easy to use.
Related Concepts

Usability

This is the complete list of articles we have written about usability.
Balance
Calm Technology
Context Of Use
Color Theory
Customer Experience
Context Awareness
Design Principles
Fit For Purpose
Human Factors
Information Scent
Design To The Edges
Input Is Error
Latent Error
Learnability
Human Scale
Modeless Design
Stability
Information Density
User Analysis
User Intent
Negative Space
Pokayoke
Least Effort
Sensory Design
Unboxing
Universal Design
Universal Usability
Usability Requirements
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