This relates generally to systems and methods for tracking and recording pupil dilation and/or signs of unconsciousness in response to detecting specific movements of the electronic device. In some examples, the electronic device captures and tracks first biometric data including pupil dilation using one or more input devices. In some examples, in response to detecting a movement of the electronic device, such as a rapid acceleration or deceleration of the electronic device, the electronic device captures second biometric data. In some examples, the electronic device displays a virtual object while presenting an extended reality environment, such as a visual indication in response to detecting that the second biometric data meets one or more criteria based on a comparison of the second biometric data with the first biometric data. In some examples, the electronic device initiates an emergency response based on the second biometric data.