How to distinguish a bucket from a dustpan in fingerprints?

In the fingerprint, the bucket is round (the bucket is a vortex, also called a spiral) and the shape is a closed ring. The dustpan is striped (also called corrugated) and the lines are not closed. Buckets and dustpans can be directly identified by naked eyes, as shown in the following figure:

Because people's fingerprints are generated by the interaction of heredity and environment, everyone has fingerprints, but they are different. Because the fingerprint repetition rate is very small, about 654.38+0.5 billion, it is called "human ID card".

There are three basic shapes of fingerprint lines-spiral, arch and ring, which are caused by different pressing directions of subcutaneous tissue of finger pad epidermis.

Extended data:

Fingerprint forensics, including fingerprint search and discovery. Search range of fingerprints:

1, criminal activity center;

2. The entrance and exit of the site and its surrounding environment;

3. Articles that criminals may have come into contact with;

4. All kinds of weapons and articles left by criminals at the scene.

And they are complex enough to provide enough functions for authentication. . Because fingerprints are everyone's unique symbol, in recent centuries, the fingerprints left by criminals at the crime scene have become an important clue for the police to pursue suspects. Nowadays, the fingerprint identification method has been computerized, which makes the identification process faster and more accurate.

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