Shadow–Neck Binding Technique

After capturing an opponent with the Shadow Imitation Technique, the user can then further extend their shadow up to the target's throat in the shape of a hand, which chokes them to death. Also, if the Shadow Imitation Technique isn't making the opponent copy their movements, this can be used to bind opponent's body in order to restrain them. The closer the user is to their opponent, the tighter the strangle will become. This technique cannot be used for an extended period of time and weakens with each passing minute. Light is a direct factor in this jutsu. It seems to make the strength of the bind stronger, though has no known effect on the duration of the bind.

Trivia
Shikamaru used this jutsu on himself to brake his finger, and use the pain to escape from Tayuya's genjutsu.