Ideas of Universal Design

I did some reseach on universal design, I an surpirsed that there are lot of information about the concept. The idea of universal design aims to meet the needs of all people that include different ages, physical abilities, sensory abilities and cognitive skills. Although the single solution in the products may not be totally usable for everyone, they can serve as many people possible. One of main ideas of universal design is to focus on wide ranges of abilities, instead of disabilities. Sometime disabilities may be caused by environment. For example, if we try to find a keyhole and unlock the door when the light is off. The function product itself is not designed to be accessible by every situation.

Here are some principles of universal design:

Equitable use
Flexibility in use
Simple and intuitive use
Perceptible information
Tolerance for error
Low physical effort
Size and space for approach and use