Which of the following is a main characteristic of fingerprints as identification?

The main characteristic of fingerprints as identification is that they are unique to each individual. This uniqueness is a key aspect that makes fingerprints a reliable method for personal identification and forensic science. Each person has a distinct pattern of ridges and valleys on their fingertips, which develops in the womb and remains unchanged throughout life, barring any significant injury or alteration. This characteristic allows law enforcement and security agencies to accurately match fingerprints found at crime scenes or in databases to specific individuals, making them an invaluable tool in criminal investigation and personal identification processes.

In contrast, some of the other options highlight misunderstandings about fingerprints. The notion that fingerprints are constantly changing is false, as they remain relatively consistent over a person’s lifetime. The idea that they can be easily fabricated or replicated undermines their reliability as a unique identifier. Additionally, while some fingerprints may not be immediately visible, they are not universally hidden; they can often be revealed through various forensic techniques. Thus, the uniqueness of fingerprints is what fundamentally establishes their significance in identification.