There is confusion on how the RDS is used maybe the user will touch the enemy or not. But the two ninjas that used the RDS used it for different purposes. Sarutobi used it to seal orochimaru's SOUL so that orochimaru will die but Minato used it to seal half of the Kyubii's CHAKRA not that the kyubii will die but it will just lose half of its Chakra. So what i will say is that if the RDS is used to seal the soul, the user will have to touch the enemy but if it is to seal Chakra, the user will not necessarily touch the enemy, the only sure thing is that the enemy must be static and not moving. I want everybody's opinion please, if you want to correct me do it swiftly please, no abuse. And am sorry if this thread has been made before. Thanks...