Continuous mobile user authentication through Behavioral Biometrics. TWOSENSE. AI is changing the way we authenticate ourselves to the devices we interact with. In human interaction, authentication between friends is implicit: it's a function of the shared experiences and behavior that make up our identity and how we identify each other. However, when we authenticate to devices it's still a password-based handshake. Our core technology is a service, i.e. library with cloud backend, for mobile and wearable apps. That service uses deep learning to model the behavior of the authorized user, as observed through device sensors such as motion, interaction and location. Once integrated, this service gives the application a continuous awareness of the authentication state of the user. We are a team with PhD machine learning expertise, years of enterprise application building experience and a leadership background in cybersecurity who are making device authentication as seamless as saying hello to an old friend through behavior based authentication.