Redeem Codes are used to give out special items during an event or to hand out Promotion Items. This feature existed already during the Closed Beta. Redeem codes consist of 16 capitalized letters and numbers divided in pairs of 4, each pair separated by a dash (e.g. R5U7-IU8T-02PO-1W9P). Codes can be configured to expire at a specific date. The amount of uses is depending on the intent. Some are unique (contest prizes), limited (promotion) or unlimited (rewards). In each case they can be used only once per account.