Imagine a fiber optic cable that can sense it's about to be dug up and send a warning

Forget wiring cities with IoT devices – this could be how wide-scale sensing gets done
Imagine an optic fiber that can sense the presence of a nearby jackhammer and warn its owner that it is in danger of being dug up, just in time to tell diggers not to sink another shaft. Next, imagine that an entire city's installed base of fiber could be turned into sensors that will make planners think twice before installing IoT devices.…