Byakugan is the blood limit of the Hyuuga Clan. The Byakugan users gains an extra-sensory perception, which gives them penetrating sight and telescopic vision. This vision also grants the member a near 360 view of Surroundings the higher the skill of the clan member, how further the distance from which they can sense incoming attacks.
The clan uses this ability in conjunction with their own chakra creating the Gentle Fist. The clan member can use their fingers or palms to emit chakra to flow into their opponents body's at the tenketsu points.