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Table 1 Mean area, standard deviation (S. D.), and % coefficient of variation (% C.V.) of four pores, taken from fingerprints obtained from the left thumb of four individuals on glass, recorded on ten consecutive days, show % C. V. to be beyond the normal acceptable level (with 5% confidence level in analytical work), thereby demonstrating that pore area is not a reproducible feature for matching fingerprints

From: Reproducibility of fingerprint microfeatures

Pore

Mean area (μm2)

S. D.

% C. V.

Individual 1

Pore 1

8693.00

4153.93

47.78

Pore 2

5622.57

2708.89

48.18

Pore 3

6249.84

3724.90

59.60

Pore 4

2325.52

1810.10

77.84

Individual 2

Pore 1

10414.51

5041.71

48.41

Pore 2

11558.77

3697.71

31.99

Pore 3

9512.30

4919.25

51.71

Pore 4

6235.20

4779.94

76.66

Individual 3

Pore 1

14472.17

6724.79

46.47

Pore 2

13626.06

7352.19

53.96

Pore 3

10455.74

4306.36

41.19

Pore 4

6852.05

6062.52

88.48

Individual 4

Pore 1

15944.53

8125.33

50.96

Pore 2

13277.69

7301.54

54.99

Pore 3

13472.14

8225.55

61.06

Pore 4

13874.03

6822.22

49.17