Put a pointer where the work starts.
Use a cable-tie NFC tag on an approved, stable reference point. Use a weatherproof adhesive tag where the surface and site rules allow it. Keep a rigid card in the field folio or truck.
A phone tap opens the map, field form, documentation link, or project contact your team selected.
Keep the record in its proper place.
The NFC tag points to a resource in your approved system. The map, form, and formal sample record stay there. The tag does not identify a sample, create a record, prove who tapped, or verify that a step is complete.
The existing system owns the record. The tag points to it.
Give each point its own route.
Assign an owner to each destination. Check the link before a field round and when the underlying resource changes. Keep sample identifiers, results, exact sensitive locations, and formal records inside authorized systems.
Start with the place that sends people back to the truck most often.