- Name: Barrier Encampment Method (結界法陣, Kekkai Hōjin; English TV "Perimeter Barrier Jutsu")
- Type: B-rank, Offensive
- Users: Sound Four, Iruka Umino ,Third Hokage (Naruto: Narutimate Hero 3)
- Debut (Anime): Naruto Episode 111
- Debut (Manga): Naruto Chapter 185
An array of four explosive tags are jointly placed around the boundary of an area. If anyone or anything happens to walk through the boundary, the seals will instantly activate and explode, killing the imprisoned target. The Third Hokage can use this jutsu in Naruto: Narutimate Hero 3 with the use of shadow clones. An advanced version of this is used by Iruka who performs the Sealed Bomb Square Release.