Duplicate Document Detection for Insurance Claims
Duplicate document fraud happens when the same receipt, invoice, or photo is submitted again—unchanged, cropped, renamed, recompressed, or slightly edited. Frodau fingerprints documents on arrival and matches against organizational memory so the same file is not paid twice.
Key takeaways
- Duplicates are not always byte-identical files.
- Screenshots and re-photos change compression but retain fingerprint similarity.
- Duplicate memory is scoped per customer environment.
- Duplicate hits combine with authenticity and line-item analysis.
Duplicate variants insurers see
- Exact file resubmission
- Cropped or rotated versions
- Renamed files with identical content
- Recompression or format conversion
- Screenshots of an earlier submission
- Minor edits to amounts or dates on the same base image
How fingerprint matching works in Frodau
Documents are fingerprinted at intake and compared to prior submissions in the same organization's environment. A duplicate signal is one input to the overall verdict—not an automatic fraud label on its own.
FAQ
- How do insurers detect duplicate claim documents?
- Insurers use perceptual hashing or fingerprint libraries scoped to their document corpus. Frodau maintains duplicate memory per customer and surfaces matches with linked prior submissions for review.