Actor

Player

Responsibilities	Collaborators
Keep track of all QR codes player has scanned	QR
Keep track of highest score, lowest score, and total score	Leaderboard
Gets Rank from leaderboard
Update database with data from class

Owner

Responsibilities	Collaborators

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QR

Responsibilities	Collaborators
Generates a score from a QR's content and stores it	Player
Generate avatar, name	QRComment
Holds comments	Scanner
Gets geolocation from Scanner
Holds list of Players that scanned it

QRComment

Responsibilities	Collaborators
Holds the comment contents	Player
Holds the commenter (who commented)	QR
Holds comments

Leaderboard

Responsibilities	Collaborators
Generate player rank based on points	Player
Sort based on points
Display rankings

Map

Responsibilities	Collaborators
Display QR codes found geographically across all players	QR
	Player

Scanner

Responsibilities	Collaborators
Scans the QR code	QR
	Player

Camera

Responsibilities	Collaborators
Records the object of the QR code	QR
	Player

Profile

PlayerProfileViewActivity

Responsibilities	Collaborators
Displays Player username	Player
Displays Player total score
Displays Player total scanned QR codes
Lets user navigate to ProfileQRListViewActivity

ProfileQRListViewActivity

Responsibilities	Collaborators
Displays total number of QRs scanned by player	QR
Displays list of all QR codes scanned by player	Player

GreetingScreenActivity

Responsibilities	Collaborators
Displays a sign up screen	Player
Allows user to enter a username
Allows user to enter a email
Shows message if user input is invalid
Sends user input to Player class