Secondary identifiers are a critical part of a KYC anti-money laundering program. The first stage of that process is to establish that the person being screened is who they say they are—by asking for proof of identity. Relying only on name information during the KYC process is fraught with dangers (many people have the same, or confusingly similar, names). With secondary identifiers, the additional pieces of personal information can be used to reduce the number of false matches and uniquely identify an individual.