Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Samples of the four levels of accessibility found in the field study. (a) A store with accessible entrance. (b) An entrance accessible with some difficulty. (c) An entrance that can be accessed with the help of other people. (d) A not accessible entrance.
