Create an account so people can actually tell it's you — usernames are unique and messages are tied to your login, not just a typed-in name.
Already have an account? Log in
Pick a username, a password, and (optionally) a photo.
Get notified when someone messages you, even when the app is closed. You can always change this later in Settings.
Get notified about new messages while the app is open.
For your security, changing your username requires your current password.