Tenprint Fingerprint Technology & Automated Systems (AFIS) Flashcards
6 cards from real Tenprint Fingerprint Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Tenprint Fingerprint Technology & Automated Systems (AFIS) flashcards as text
What is the purpose of a 'matcher score' or 'similarity score' in AFIS?
Answer: It quantifies how similar two fingerprint impressions are for ranking candidates
A similarity score ranks how closely two fingerprint impressions align algorithmically, helping examiners prioritize candidates for review.
What is a 'false non-match' (FNM) in AFIS performance measurement?
Answer: When AFIS fails to return the correct mate in the candidate list for a genuine match
A false non-match occurs when AFIS fails to rank the true matching record high enough on the candidate list for a genuine same-finger pair.
What is a 'false match' (FM) or 'false positive' in AFIS?
Answer: When AFIS ranks an incorrect candidate as the top match for a genuine submission
A false match (false positive) occurs when AFIS incorrectly ranks a non-matching record at the top of the candidate list.
What technology do most modern live-scan devices use to capture fingerprint images?
Answer: Optical frustrated total internal reflection (FTIR)
Most live-scan devices use optical FTIR sensors where ridges contact the prism surface and break total internal reflection, creating an image.
In AFIS, what is a 'duplicate check'?
Answer: Searching the database to determine if a subject is already enrolled under a different identity
A duplicate check searches the AFIS database to detect whether the same biometric identity exists under a different name or identifier.
What FBI rap-sheet document is generated when a tenprint submission results in a match to a criminal record?
Answer: Identity History Summary (IdHS) / Criminal History Record (CHR)
When a tenprint submission matches an existing criminal record, the FBI generates an Identity History Summary (rap sheet) returned to the submitting agency.
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