Access control, smart helmets and environmental monitoring that produce records usable in an audit, not just a dashboard nobody opens.
Site systems usually collect plenty and prove nothing. A camera records a worker without a helmet; the footage exists; nobody can find it when the inspector asks three weeks later.
The second failure is adoption. If a system adds a step to a foreman's morning, it gets bypassed within a month, and the data quietly becomes fiction.
We start from the records that are actually required — attendance, induction, PPE compliance, dust and noise thresholds — and build backwards to the minimum hardware that produces them reliably.
Smart helmets and wristbands carry the worker's identity and vitals; access points read them without a separate card; environmental stations log dust, noise and weather against the same timestamps. One export covers the whole audit.
A drawing, a photo of the location and the outcome you are measured on is enough for a first technical route.