- *Mesh or pickets*: Narrow openings or closely spaced vertical bars that prevent footholds or handholds.
- *Sharp or pointed tops*: Designed to deter climbing or sitting on the fence.
- *Durable materials*: Often made from robust materials like steel, iron, or aluminum to withstand attempts to cut or break through.
- *Secure anchoring*: Strong posts and foundations ensure the fence remains stable and secure.