Hiding in Mist Technique

This displacement technique is a specialty of the Ninja from Kirigakure, where one causes a mist to spring forth by lifting up some water, then goes in and out of sight at will from within the pearly-white realm. The mist's thickness is controlled by the amount of chakra kneaded into it. It can't fool the Byakugan, but, due to the mist being created with the user's chakra, any Sharingan-user will see the mist coloured by their opponent's chakra, which will effectively hide the user from the dōjutsu.

Trivia

 * When Kakashi uses this in the anime, Itachi claims that the mist does not prevent him from using his Sharingan, contradicting both the manga and earlier anime scenes, although this could have been merely a bluff.It's also been utilized without a nearby water source