Fingerprint is one of the oldest, reliable and mature biometric technologies and is considered one of the best, cheapest and legitimate proofs of identification. A correlation between physical characteristics like fingerprints and blood group was demonstrated in previous studies. This study was carried out in 2010 on 305 Libyan medical students of Al-Jabal Al-Gharbi, University, Zawia, Libya and were selected randomly having different ABO blood groups, with the objective to a) Study distribution of fingerprint pattern among the subjects having different ABO and Rh blood group b) Correlate any relation between their characters and blood group. The data from the study showed that male: female ratio was 1.2:1. Majority of subjects (48.9%) in this study were of blood group O followed by blood group A (33.1%), B (12.8%) and AB (5.2%). Rh-positive cases constitute about 87.2% of all studied cases. The general distribution of pattern of finger showed high frequency of Loops registering 50.5%; followed by whorls (35.1%) and arches (14.4%). In Rh+ve cases of blood group A and O loops incidences were the highest (52% and 54.3% respectively) then whorls (33.4% and 30.6% respectively), while in blood group B whorls were predominance in both Rh+ve and Rh-ve cases. In all blood groups there were high frequency of loops in thumb, index and little fingers.
Source: Relation between fingerprints and different blood groups.