Hackers are getting smarter these days, and biometric authentication is one way to keep them at bay. Through biometric authentication, useful identifying markers and characteristics of a person are put before a machine that then verifies whether that person is who he says he is. The system is relatively simple to install, though it generally is installed by an expert and the actual provider of the system. Once installed, those authorized to go through a room, enter a portal or do anything else that requires biometric authentication will be entered into it. A company either can pick the traits that it will use to identify people, or the system will do it based on these unique characteristics. The characteristics themselves are less vital than the idea that through this authentication, private information can be protected indefinitely. Through something like this, hackers and other unauthorized users are left in the dark.