Senstar's FiberPatrol-PL, an advanced security system for buried pipelines, is optimized to detect third-party interference (TPI). FiberPatrol-PL uses fibre optic cable buried along the pipeline to detect and locate ground vibrations and acoustic signatures associated with TPI activity. A single FiberPatrol-PL processor can detect and locate TPI over a distance of up to 72 km (45 mi) and within 10 m (33 ft) accuracy. FiberPatrol-PL detects TPI activity that threatens pipeline integrity: machine or manual digging, heavy machinery operating nearby, and even people walking in the vicinity of the pipeline. The system’s advanced detection algorithms optimize the detection of TPI activity while rejecting nuisance alarms. It can also reject vibrations caused by traffic on roads and railways running parallel or perpendicular to the pipeline.