# Screening **Entity class:** Decision-support process **Domain:** Security / borders / watchlisting / public health **Maturity:** Developed ## Definition **Screening** compares a person, item, event, or transaction against criteria or indicators to determine whether additional examination or action is warranted. Counterterrorism screening can occur in aviation, visas, borders, law enforcement, financial systems, and protective security. Screening is not adjudication. A possible match may require identity resolution, secondary inspection, contextual analysis, correction, or redress. Thresholds trade false negatives against false positives, and high-volume screening makes data quality and match logic operationally consequential. ## Relationships - **upstream identity source:** [[wiki/Terrorist Identities Datamart Environment|TIDE]]. - **metaphor:** [[wiki/Dragnet|Dragnet]]. - **financial analogue:** transaction monitoring under the [[wiki/Bank Secrecy Act|Bank Secrecy Act]]. - **technical prerequisite:** [[wiki/Entity Resolution|Entity Resolution]]. ## Sources / Provenance - [NCTC — TIDE fact sheet](https://www.dni.gov/files/Tide_Fact_Sheet.pdf)