Figure 6.
Different views of the app. (a) Initial screen. (b) Menu options for unregistered user. (c) Menu options for registered user. (d) Menu options for administrator user.
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.