Distributed acoustic sensing (DAS) turns ordinary fibre‑optic cables into a continuous network of vibration detectors. By measuring tiny changes in the back‑scattered light that travel down the cable, the system can locate environmental disturbances anywhere along thousands of kilometres of fibre.

The SOUNDSCALE team set up a Citizens’ Panel of 48 residents from Hampshire and London. In May and June 2025, participants met in three workshops that mixed online and face‑to‑face discussion. The meetings began with a simple demo of DAS, then moved to small breakout groups where people shared local issues they cared about and brainstormed how the technology might help.

The panel’s aim was to bring the public into the research priority setting process, a first step toward democratising science. However, recruitment quotas were not fully met for some ethnic minority groups in Hampshire and for people with no qualifications in both locations. As a result, white participants and those from middle‑class social grades were over‑represented.

Because all participants were screened to exclude those with prior knowledge of fibre‑optic technology, many started with only a superficial grasp of DAS. This limitation was acknowledged as a potential influence on how the deliberations unfolded.

The project hopes that the insights from these residents will guide future DAS deployments so that they are more responsive to community concerns.

Visual illustration of DAS principles accompanies this text, showing how fibre‑optic strain changes are recorded via Rayleigh backscatter.