Various implementations disclosed herein include devices, systems, and methods that identify a gesture based on event camera data and frame-based camera data (e.g., for a CGR environment). In some implementations at an electronic device having a processor, event camera data is obtained corresponding to light (e.g., IR light) reflected from a physical environment and received at an event camera. In some implementations, frame-based camera data is obtained corresponding to light (e.g., visible light) reflected from the physical environment and received at a frame-based camera. In some implementations, a subset of the event camera data is identified based on the frame-based camera data, and a gesture (e.g., of a person in the physical environment) is identified based on the subset of event camera data. In some implementations, a path (e.g., of a hand) by tracking a grouping of blocks of event camera events in the subset of event camera data.