In forex trading, a one touch option is a type of binary option that allows traders to make a profit if the price of the underlying asset reaches or surpasses a predetermined price level (the “strike” price) at any time before the option’s expiration date. If the price does not reach the strike price during the option’s lifetime, the option expires worthless. One touch options are typically used by traders who believe that the price of an asset will move sharply in a certain direction and want to take advantage of this movement without actually buying or selling the underlying asset. They are also used by traders who want to hedge their existing positions against potential losses.