Thread:Omega64/@comment-33030270-20190912142431/@comment-10330822-20191002004007

That only works if the person actually inteferes with the barrier itself. Remember, Kashin Koji also is able to enter the barrier undetected, so access to the barrier access seal must be in Kama's possession. Remember, it was because Itachi and Orochimaru had the barrier access code as part of their ANBU training, that they were able to enter Konoha whenever they wanted too. Of course, Hiruzen deliberately left the barrier code the same for Itachi's benefit.