# Logout proc (mob)

Source: https://ref.dm-lang.org/mob/proc/Logout

### Format
> `Logout()`

### When
> Called when a player's client has disconnected from a mob. This happens in client.Del() when the player logs out of the world. It may also happen when the player switches from one mob to another.

### Default action
> None.

One may wish to distinguish between a player who has disconnected from the game and one who is simply switching from one mob to another. In the case of a player switching to another mob, by the time `Logout()` is called, the original mob's key will be null, whereas the key will still be non-null in the case of a player disconnecting from the game.

### See also
- [Login proc (mob)](https://ref.dm-lang.org/mob/proc/Login.md)
- [client var (mob)](https://ref.dm-lang.org/mob/var/client.md)
- [key var (mob)](https://ref.dm-lang.org/mob/var/key.md)