How many biometric “identity cards” are in the human body

An important part of life science is biometrics. Scientists have discovered that the "identity card" of the human body is not limited to fingerprints, but is reflected in the eyes, lips, brain, blood and other parts.

Eye pattern Eye pattern refers to the pattern of the retina in the human eye. Because there are differences in the structure of human retinas, eye patterns are also different. The human eye pattern can be obtained through an electronic camera for identification, and its reliability is comparable to that of fingerprints.

Lip pattern Lip pattern is the shape of a person's lips. In recent years, a Japanese doctor collected and studied the lip lines of hundreds of people and found that the lip lines of people are different, and the lip lines of people do not change with age. This attracted the attention of experts in the field of identification.

Brain patterns Human trees have "annual rings" like trees, which are human brain patterns. Human brain pattern can be measured using sound waves, and with the help of brain pattern, the true age of a person can be accurately measured.

Voiceprints Due to slight differences in human speech organs and differences in age and language habits, human voiceprints are also different, and people's voiceprints remain basically unchanged from the development of their voices in their teens until their fifties. . Chinese and foreign scientists have successfully used sound analysis for judicial polygraphs.

The scientific research on blood streak found that due to the different charge and molecular size of isoenzymes and polymorphic proteins in human blood, with the help of electrophoresis technology, different circles of electrophoretic bands can be produced. It is blood marks. The probability of the same blood mark is 17.5 thousandths, so it is also a reliable "identity card" on the human body.