FusionAuth has announced BioTech, a new technology that enhances user security by utilizing bodily fluids as an additional factor of authentication. This method aims to make MFA more convenient and user-friendly, eliminating the need for devices or apps. Users can provide any bodily fluid, such as saliva, sweat, or tears, during login, which is then analyzed using a patented algorithm to authenticate them. The technology has undergone extensive testing, including user experience trials, and has shown promising results in terms of speed and accuracy. However, some security experts have raised concerns about the potential for exploitation by hackers and the need for protection of sensitive biometric data. Despite these criticisms, FusionAuth remains confident in the benefits of BioTech, calling it a "game-changer" in user authentication.