Build traceability across the chain so a recall implicates the smallest possible slice of product. Capture more tiers, raise data granularity and turn on a ledger - but every gain has a cost.
A digital product passport records provenance across the chain so that, when a recall hits, it implicates the smallest possible slice of product.
Capturing more tiers, higher granularity and a shared ledger raises isolation precision. Recall scope is roughly what precision cannot isolate: 100% minus precision.
Maximise isolation precision (one-up/one-down at every tier) to shrink recall scope, spending on granularity where it matters most.
