@Entity
public class SlotScore
extends hbm.entity.BaseEntity<Integer>
implements Cloneable

The Entity class SlotScore is keeping the information for the phone number of a player and the point score of him. This prevents the player to uninstall the game and install it again and get again 1000 points of score. Only the first time when the player installs the game the player can get 1000 points score. Next time he have to buy points from google play.