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The Secret Key (Japanese: ひみつのカギSecret Key) is an event-exclusiveKey Item available in Pokémon Platinum. It is shaped like Rotom's head, with the outline of its eyes and mouth visible under the coat of Rotom-orange plastic. The key's teeth look like the prongs of an electrical plug. It was the first of four event items in the Sinnoh-based games, being followed by the Member Card, Oak's Letter, and Azure Flute.
The Secret Key opens up Rotom's Room at the Team Galactic Eterna Building in Eterna City after it has been cleared. It contains five appliances necessary for Rotom to change between its six forms. Rowan comes in when the player changes Rotom's form for the first time, explaining its history.
A high-tech key that has to be used at a specific location. It emits a special electronic signal to open a door.
Acquisition
Distribution
Players could obtain the Secret Key via Nintendo Wi-Fi Connection or from selected stores in certain countries. Japanese players could then share them to five other players of Platinum.
For more info on how to use the Secret Key, visit www.PokemonPlatinum.com. Be sure to save your game after you pick up the Secret Key at a Poké Mart.
PAL English
Wonder Card
The Secret Key!
Discover the secrets of ROTOM! Eterna City may unlock the mystery! Be sure to save your game after you pick up the Secret Key at a Poké Mart.
Spanish
Wonder Card
¡La Llave Secreta!
¡Descubre los secretos de ROTOM! ¡La clave para desentrañar el misterio puede ser Ciudad Vetusta! Asegúrate de guardar la partida cuando recojas la Llave Secreta en la Tienda Pokémon.
Italian
Wonder Card
Ecco la Chiave Segreta!
Scopri i segreti di ROTOM! Evopoli potrebbe svelare l'arcano! Ricorda di salvare il gioco dopo aver ritirato la Chiave Segreta in un Pokémon-Market.
German
Wonder Card
Der ?-Öffner wartet auf dich!
Entdecke ROTOMs Geheimnis! In Ewigenau knackst du das Rätsel! Vergiss nicht, deinen Spielstand zu sichern, nachdem du den ?-Öffner im Pokémon-Supermarkt abgeholt hast.
French
Wonder Card
La Clé Secrète!
Percez les secrets de MOTISMA! Et si la solution se trouvait à Vestigion? Allez tout d'abord récupérer la Clé Secrète dans une Boutique Pokémon, puis n'oubliez pas de sauvegarder.
The Secret Key was featured in Unplugging Rotom (Heat, Wash, Mow, Fan, Frost), where it was found by Diamond at the Old Chateau after his and Pearl's second encounter with Rotom. As the word "Eterna" was written into the key, they deduced that it must fit into something found in Eterna City. Following Rotom into the Team Galactic Eterna Building, they soon found a room labeled "Secret Room", and used the key to unlock its door, revealing that the room contained all of Rotom's electric appliances, giving it access to all of its forms.
Trivia
The Secret Key was both the first item that could be obtained over Nintendo Wi-Fi Connection and could be given to friends. However, this can only be done with the Japanese Wonder Card.