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Developer Privacy Notice for Data Collection

Last updated: March 2018

To help improve the WebVR API and the Unity WebVR Assets package, each time a web page built using the WebVR Assets is loaded, Mozilla automatically receives general-usage statistics and uncaught JavaScript errors encountered by end-users, using Google Analytics and Sentry, respectively. The complete list of collected data includes metrics for counting the number of unique web-page sessions; time for web pages to load and time open; JavaScript error exceptions occurred on the page; the number of times a VR device is mounted and worn; number of times VR mode is enabled and time spent; and a random identifier.

You as a developer can turn off this data collection by modifying the configuration snippet that comes with the VR template. It is your obligation to inform your end-users of this data collection and to inform them that it can be turned off by enabling “Do-Not-Track” in their browsers.

List of Collected Data

  • Unique UUID-v4 random identifier (generated according to IETF RFC4122), persisted in the browser's LocalStorage
  • JavaScript error (exception) messages (without file paths)
  • Console messages (i.e., error, warning, log, info)
  • Respects Do-Not-Track (i.e., DNT: 1 HTTP header and navigator.doNotTrack === '1' JavaScript value)
  • Dimensions (width × height) of the browser's screen and window, ratio of the resolution (i.e., navigator.devicePixelRatio)
  • Release version of the Unity WebVR Assets package being used (e.g., v1.0.1)
  • JavaScript Heap memory used (measured in megabytes)
  • WebXR API support (i.e., navigator.xr)
  • WebVR v1.1 API support (i.e., navigator.getVRDisplays)
  • WebVR v1.1 events emitted by the browser (i.e., user-initiated actions and headset events) during a unique page load:
    • Number of times and time until VR mode is entered (e.g., user keypress, user click, automatically presented)
    • Number of times and time until VR mode is exiting (e.g., user keypress, user click, automatically exited, browser's Back button, browser's navigation to another page, etc.)
    • Number of times and time until a VR device is worn/mounted
    • Number of times and time until a VR device is taken off/unmounted
    • Number of times and time until a VR device has been connected (or detected on page load)
    • Number of times and time until a VR device has been disconnected/unplugged
    • Number of times and time until a mouse cursor is temporarily disabled for input while "pointerlocked" in VR mode (e.g., for Windows Mixed Reality's desktop flat-pane views)
    • Number of times and time until a mouse cursor is temporarily disabled for input while "pointerlocked" in VR mode (e.g., for Windows Mixed Reality's desktop flat-pane views)
  • Amount of time the active page took to load and to reach:
    • Loading screen
    • Splash screen
    • Unity game
  • Amount of time the active page was open for ("session length")
  • Browser's User-Agent string (i.e., navigator.userAgent)
  • WebGL 1.0 API support
  • WebGL 2.0 API support
  • Gamepad API
    • Support of API (i.e., navigator.getGamepads)
    • Names of connected gamepads (i.e., Gamepad#id)
  • Web Audio API support (i.e., AudioContext)
  • WebAssembly (WASM) API support (i.e., WebAssembly)
  • Web Worker support (i.e., Worker)
  • Service Worker API (i.e., navigator.serviceWorker)
  • requestIdleCallback API (i.e., window.requestIdleCallback)