diff --git a/BrowserStorage.md b/BrowserStorage.md
index 896663e..5c02772 100644
--- a/BrowserStorage.md
+++ b/BrowserStorage.md
@@ -4,4 +4,5 @@ This document details the data stored in localStorage and sessionStorage of the
 | --------- | --------- | -------------
 | game-code | String    | The current game code the player is in, if this is not set, then they are not in a game
 | is-host   | Boolean   | If the player is the host of the game or not.
-| user-name | String    | The name of the user in the game.
\ No newline at end of file
+| user-name | String    | The name of the user in the game.
+| user-id   | UUID      | The user's ID as assigned by the server. This is used to let players re-join games if/when they need to refresh for whatever reason. This is decided by the server and is sent back to the client to ensure the ID is unique across the system.
\ No newline at end of file