Clearly define boundaries with "No Trespassing," "Authorized Personnel Only," or "Private Property" messaging.

For maximum longevity, especially in outdoor environments, the choice of material is critical: Estimated Lifespan Best Use Case 7–15 years Outdoor gates, fences; rust-proof and weather-resistant. Reflective Vinyl

Attached to metal or plastic to ensure nighttime visibility. 3–5 years Cost-effective for window decals or indoor use. LED Signs

Inform visitors and intruders that "CCTV is in Operation" or that there is "24-Hour Video Monitoring".