Warp Devices are ancient machines used to travel locations instantly. They are dormant in the game, and require Warp Keys to reactivate them. You can use a Warp Device by going to the main menu and selecting "Warp," then selecting where you would like to warp to. There is a Warp Device in most major areas. Occasionally, there will be an invisible magic barrier, preventing you from leaving a certain area until you have performed a certain action. Activated Warp Devices appear as silver diamonds on the World Map, but do not appear on the mini-map.