{
  "deviceVendor": "OSVR",
  "deviceName": "Hacker Development Kit Tracker",
  "author": "Ryan Pavlik <ryan@sensics.com>",
  "version": 1,
  "lastModified": "2015-04-22T04:03:54.323Z",
  "interfaces": {
    "tracker": {
      "count": 1,
      "bounded": true,
      "position": false,
      "orientation": true
    }
  },
  "semantic": {
    "hmd": "tracker/0"
  },
  "automaticAliases": {
    "/me/head": {
      "rotate": {
        "axis": "x",
        "degrees": 90
      },
      "child": {
        "changeBasis": {
          "x": "-x",
          "y": "-z",
          "z": "y"
        },
        "child": "semantic/hmd"
      }
    }
  }
}
{
    "deviceVendor": "OSVR",
    "deviceName": "Hacker Development Kit Tracker",
    "author": "Ryan Pavlik <ryan@sensics.com>",
    "version": 1,
    "lastModified": "2015-10-13T19:29:37.857Z",
    "interfaces": {
        "tracker": {
            "count": 1,
            "bounded": true,
            "position": false,
            "orientation": true
        }
    },
    "semantic": {
        "hmd": {
            "$target": {
                "rotate": {
                    "axis": "x",
                    "degrees": 90
                },
                "child": {
                    "changeBasis": {
                        "x": "-x",
                        "y": "-z",
                        "z": "y"
                    },
                    "child": "tracker/0"
                }
            }
        }
    },
    "automaticAliases": {
        "/me/head": "semantic/hmd"
    }
}

Update HDK device descriptor to move the transform in.
Update HDK device descriptor to move the transform in.
