There are many ways how to identify people and to provide their authorization of access to a specific area. This article describes
the reliability of biometric systems that are commonly used to identify of people. The article aims to highlight the ways in which
to disturb the security of biometric systems. There are describes techniques that can impair the reliability of equipment for
fingerprinting. To test the reliability of the fingerprint was made series of measurements; the results are presented in the article.