Whereas fingerprint analysis is widely used in forensic science, the rest of our hands equally retains a wealth of anatomical information. Bringing together anatomy and biometrics, ERC grantee Sue Black seeks to understand variability in the human hand though images contributed by ‘citizen scientists’. In search of uniqueness, she uses multimodal biometrics to visualise hand variation, and therewith develop a forensic identification system that might become as reliable as DNA.