Earprints in forensic investigations

Area of Science:

• Forensic Science
• Biometrics
• Anthropology

Background:

• Earprints have historical use in forensic investigations.
• Their admissibility as evidence in court has faced scrutiny.
• Fundamental questions regarding earprint individualization remain unresolved.

Purpose of the Study:

• To review theoretical and practical challenges of earprint use in forensics.
• To present findings on earprint variation from empirical studies.
• To explore factors influencing earprint distinctiveness and adult ear morphology.

Main Methods:

• Literature review of earprint history and legal precedent.
• Empirical studies on earprint variation.
• Analysis of factors affecting earprint acquisition and ear morphology.

Main Results:

• Identified key sources of intra-individual earprint variation, including lifting methods, listening duration, and applied force.
• Investigated variables impacting the force applied during earprint creation.
• Documented changes in live ear morphology throughout adulthood.

Conclusions:

• Earprint analysis for forensic individualization is complex due to inherent variability.
• Understanding factors influencing earprint formation is crucial for reliable forensic application.
• Further research is needed to establish robust methodologies for earprint evidence.