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    • 7 Principles

    1. Equitable Use - The design does not disadvantage or stigmatize.
    2. Flexibility in Use - The design accommodates a wide range of individual preferences and abilities; provides choice in methods of use.
    3. Simple and Intuitive Use - Use of the design is easy to understand, regardless of the user’s experience, knowledge, language skills, or current concentration level; eliminates unnecessary complexity.
    4. Perceptible Information – The design communicates necessary information effectively to the user, regardless of ambient conditions or the user’s sensory abilities; uses pictures, audible, or tactical methods.
    5. Tolerance for Error – The design minimizes hazards and the adverse consequences of accidental or unintended fatigue; elements most used should be most accessible, or fail-safe features included.
    6. Low Physical Effort – The design can be used efficiently and comfortably and with a minimum of fatigue.
    7. Appropriate Size and Space - The appropriate size and space is provided for approach, reach, manipulation, and use, regardless of the user’s body size, posture, or mobility.