Forensic magnetometry is a critical tool in crime scene investigations and archaeological surveys, relying on precise magnetic field measurements to detect buried objects or disturbances. However, outdoor seating—particularly metal benches, chairs, or tables—can introduce significant magnetic interference, skewing results and reducing accuracy.

Metal structures in outdoor seating generate localized magnetic anomalies, masking subtle signals from buried evidence. Even non-metallic seating with reinforced frames can disrupt readings. Forensic teams must account for these interferences by conducting baseline scans or adjusting sensor placement. In high-traffic urban areas, temporary seating setups further complicate data interpretation.

To mitigate these effects, experts recommend pre-scanning sites before seating installation or using advanced filtering algorithms to isolate relevant signals. Understanding these challenges ensures more reliable forensic and archaeological outcomes.