They are readers who use parts of the human body that are private to individuals, such as fingerprints and veins, iris, and face. Some biometric readers also have the ability to be card readers. Biometric readers are more reliable than other card readers. The fact that that biometrics cannot be used due to physical features that cannot be given to someone else provides a higher level of security. In addition, it is seen faster and more useful when it is not lost and forgotten at home, like other cards. Biometric readers are used by institutions that are sensitive to keeping security at a high level.