 The NFB requested that Target optimize its website accessibility for the blind by adopting standards promulgated by the World Wide Web Consortium, including the Web Content Accessibility Guidelines or the Architectural and Transportation Barriers Compliance Board's Section 508 Amendment to the Rehabilitation Act of 1973 standards, specifically encouraging Target to adopt the alt attribute for clickable images featured on the website.In its petition, NFB alleged that in one instance, when a blind user visiting this website selected an image of a Dyson vacuum cleaner using his or her tab key, the voice synthesizer on the computer would say "Link GP browse dot HTML reference zero six zero six one eight nine six three eight one eight zero seven two nine seven three five 12 million 957 thousand 121" instead of a useful description of the image.The NFB also claimed that the site lacked image maps and other accommodations, which prevented legally blind individuals from navigating through the website, and that the design of the online checkout pages prevented users with visual disabilities from being able to determine where the mouse pointer was on the screen.