The ADA - Americans with Disabilities Act - is the law that requires business offer same services to all customers, regardless of physical limitation. Most business websites should be ADA compliant.
Over 20% of the world’s population suffers from some form of disability; resulting in millions of people struggling to access web pages. Considerations include:
Perceivable - ability to see or hear the web content, using screen readers and other assistant technologies.
Operable - ability to operate the website using a range of input devices such as keyboard, mouse or input pens.
Understandable - ability to comprehend the website content by users with varying IQ levels.
Robust - ability for the website to be accessed using different technologies and equipment.
This is just a quick introductory overview of ADA compliance to offer information about website accessibility options.