How does a Distributed Acoustic Sensor monitor a Perimeter or Border? Fotech Solutions develops Distributed Acoustic Sensor (DAS) solutions, used to monitor and protect pipelines, cables, perimeters and borders as well as provide data and insights for smart cities and intelligent transportation systems. Combining leading-edge industrial photonics and expertise in AI, Fotech generates unrivalled sensory data that solves business-critical challenges. Fotech’s unique DAS technology and services are