As a player, I want a profile with a unique username and my contact information.

Acceptance Criteria

Need a database to store the usernames and contact information of players.
When a user is registering, need to make sure that they cannot register under a username or email that is already in use.
The player's account should be tied to their phone, so that when the app is launched, it immediately recognizes and logs them in without prompt.
The player should be able to log back in should the decide to log-out, and it must be checked whether their password is correct when doing so.
The player's profile information should be displayed on the homepage.
The profiles of other players should be viewable through search/leaderboard.
Concept displayed through storyboard .
UML diagram connecting all components involved.

Unknowns