Ink Clone Technique

This clone, made from a small amount of ink, carrying chakra, is different from the ordinary Clone Technique in that it has actual substance and mass, making it difficult to see through. As a member of the Foundation, Sai is able to make use of the clone for missions involving surprise attacks, infiltration, and assassinations. However, experienced ninjas such as Orochimaru and Kakashi are able to see through this technique. It would seem the Sai and his clones have the ablility to stay in contact with each other, as his clone knew exactly where to find the original.