Brittan Heller is a human rights lawyer who recently published a paper pointing out that there are some significant gaps in privacy laws that do not cover the types of physiological and biometric data that will be available from virtual and augmented reality. Existing laws around biometrics are tightly connected to identity, but she argues that there are entirely new classes of data available from XR that she's calling 'biometric psychography,' which she says is a 'new concept for a novel type of bodily-centered information that can reveal intimate details about users' likes, dislikes, preferences, and interests.'