https://www.eyecooltech.com/biometric-analysis-in-criminal-investigations/ Challenges 1 Paper documents are used to manage the fingerprint images of criminals and suspects in traditional modes, but the paper data is not easy to find, takes up a large storage space, and is difficult to manage. Irresistible factors, such as fire, aging corrosion, etc., would lead to a high risk of damage and loss of the original fingerprint data. 2 For the confirmation of criminals, forensic manual detection takes too long. An extremely long time would be taken for forensic experts to manually complete the fingerprint comparison, which may also affect the criminal investigation.