new additions by UFKhan
19- Retinal patterns. These are very unique - even twins don't have the same retinal patterns
20- Size of eyeballs and shape of Eyebrows
21- Diameter of aorta
22- shape of Nails
23- Length and thickness of eyelashes
24- Size/shape and whiteness of Teeth
25- Skin appearance, besides color
26- Structure of nose
27-Fluffiness of hair
28- Size of feet
29- Blood group
30- Structure of Brain
31) Genes - being part of the DNA, they carry genetic information responsible for a large number of physical features.
32) Degree of righteousness of one's Heart
33) Mind/Mentality Certain non-physical elements probably have the most weightage in determining the uniqueness and distinction of individuals, e.g. (32) and (33).