{
  "namespace": "device",
  "episode_id": "20260708_155328",
  "stream": "hand_tracking_openxr",
  "method": "device_openxr_26",
  "not_device_output": false,
  "joints_per_hand": 26,
  "rate_hz": 18.99,
  "per_joint_confidence": null,
  "visibility_rule": "active==1 AND name nonempty",
  "source_file": "hand_tracking.csv",
  "stored_at": "data-layers/e6-estimate/hand_openxr_device.json",
  "path_note": "Folder name is historical. Namespace is device. Do not treat this file as an offline detector.",
  "flags_file": "e6-layers/hands_flags.jsonl",
  "thumb_index_distance": "geometry only, not contact force"
}