To create an account user can use Google account (OAuth Social login).
User just needs to define a username (unique) between 7-20 chars (A-Z,1-9,"-") once they have granted Explorer permissions to their respective accounts.
User cannot modify username once created on registration.
Account is only created once username successfully entered.
The app only takes users email address information that is registered with Google or Facebook (and this is only to be used for communication).
Once account created, user can perform all actions in app.
Account management
User can not change any details associate with their account (although they can see the data held).