USER BIOMETRICS AUTHENTICATION (Comprehensive Analysis)As the capabilities of mobile devices increase, their security is becoming more of an issue. Passwords and PINs are the lowest forms of security, yet they are the most widely used. Continuous authentication using behavioral biometrics and multimodal biometrics provides a way to greatly increase security. Using behavioral biometrics, such as linguistic profiling, keystroke dynamics, and behavior profiling, with text messages is a good way to analyze