Whenever NeuralShield’s on-device logic detects an abnormal pattern—such as a sustained shift in flow features or pulse-wave morphology beyond what motion alone can explain—it connects a smartphone via Bluetooth Low Energy and opens the companion app. The app is designed to be ready before an emergency: the patient first completes a short medical profile, then follows a brief tutorial that records their baseline speech and facial movement while they reads a simple line of text into the camera. If NeuralShield later detects concerning signals, the app wakes the patient and guides him through a rapid confirmation sequence: a few quick, easy checks of arm function, balance, and posture symmetry, along with how he feels in that moment. If the combined evidence suggests high risk, the app prompts immediate action by connecting to emergency services and notifying the patient’s preset contacts—helping move him from “something feels off” to “help is on the way” in under a minute.