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Can the new fingerprint still open the door lock after the finger injury heals?

Human fingerprints are controlled by genes, and because each person's genetic makeup is different, fingerprints are also different. During the process of skin development, the subcutaneous tissue on the fingers grows faster than the epidermis, so pressure on the epidermis is generated at the top, forcing the epidermis to gradually produce protrusions and grooves, thus forming  lines. The branches and starting points of fingerprints are all under genetic control, producing the endpoints and junctions.

Fingerprints have over 100 different features, and if calculated mathematically, a random combination of these features can be formed through mutual matching, with a quantity far greater than the total population. So, it is almost impossible for human fingerprints to be the same.

Moreover, the damage caused to fingerprints due to cuts, corrosion, and other reasons will recover to the original state after healing.

There is often such a scenario in movies and TV plays: detectives hold a magnifying glass to carefully examine the scene of the crime, finally find the fingerprint left by the suspect on the surface of the object, and finally use this clue to lock the criminal and bring him to justice. Fingerprints can be used to solve cases because everyone's fingerprints are innate and unique. Once upon a time, criminals attempted to remove fingerprints by burning, cutting, and corroding them to evade legal sanctions. However, after the wound healed, the fingerprints returned to their original state, which was truly embarrassing.

Based on the uniqueness of fingerprints, scientists have gradually applied fingerprint recognition technology to various aspects of life, such as fingerprint keys, fingerprint check-in, etc. With the popularization and optimization of fingerprint recognition technology, we can even use this convenient recognition function on personal computers and mobile phones, not only avoiding cumbersome password input, but also more securely protecting personal data.

Now, in addition to fingerprint recognition technology, scientists have also invented more advanced recognition technologies such as palm print recognition, iris recognition, and speech recognition. With the help of these technologies, our lives will definitely become more convenient and efficient in the near future.


*Originally from Intelligent Door Lock Research Pro, if involved in copyright issues, please contact us for prompt deletion.