# Does the ML2 controller/totem still use the same magnetic field tracking technology as the ML1? **URL:** \ **Category:** General\ **Created:** [September 27, 2022, 6:44pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949 "2022-09-27T18:44:43Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![michaelbjmcdonald](https://avatars.discourse-cdn.com/v4/letter/m/2bfe46/32.png) [@michaelbjmcdonald](https://forum.magicleap.cloud/u/michaelbjmcdonald)\ **Post date:** [September 27, 2022, 6:44pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949/1 "2022-09-27T18:44:43Z")
Does the ML2 controller/totem still use the same magnetic field tracking technology as the ML1? The experience we are creating requires the totem to work without camera tracking– due to the location being used (inside a moving vehicle) We have a working demo running on an ML1 headset, but we need to know if ML2 controllers still uses magnetic field 6DOF tracking technology before we consider upgrading our headset. Kind regards, Michael ---
**Author:** ![sengelman](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.magicleap.cloud/sengelman/32/11_2.png) [@sengelman](https://forum.magicleap.cloud/u/sengelman)\ **Post date:** [September 27, 2022, 6:49pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949/2 "2022-09-27T18:49:05Z")
@michaelbjmcdonald , the ML2 does not use the same EM filed tracking method as ML1. We use an inside-out SLAM camera tracking system now: [ML2 Overview (Controller)](https://developer-docs.magicleap.cloud/docs/guides/ml2-overview/#controller). ---
**Author:** ![michaelbjmcdonald](https://avatars.discourse-cdn.com/v4/letter/m/2bfe46/32.png) [@michaelbjmcdonald](https://forum.magicleap.cloud/u/michaelbjmcdonald)\ **Post date:** [September 27, 2022, 8:42pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949/3 "2022-09-27T20:42:04Z")
The use case would be to have a 3D model be parented to the 6DOF controller– while sitting in the back of a car at full speed. ---
**Author:** ![michaelbjmcdonald](https://avatars.discourse-cdn.com/v4/letter/m/2bfe46/32.png) [@michaelbjmcdonald](https://forum.magicleap.cloud/u/michaelbjmcdonald)\ **Post date:** [September 27, 2022, 8:42pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949/4 "2022-09-27T20:42:12Z")
Thanks Sengelman, When it says "Controller tracking should still work when there is no direct line of sight." Does that mean it will work? Or that it hasn't really been tested?" Would I be able to get a full refund if it doesn't work in the situation of loosing camera tracking? Cheers, Michael ---
**Author:** ![sengelman](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.magicleap.cloud/sengelman/32/11_2.png) [@sengelman](https://forum.magicleap.cloud/u/sengelman)\ **Post date:** [September 27, 2022, 11:18pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949/5 "2022-09-27T23:18:33Z")
Controller tracking is much improved. It's a reliable inside-out tracking system. ---
**Author:** ![michaelbjmcdonald](https://avatars.discourse-cdn.com/v4/letter/m/2bfe46/32.png) [@michaelbjmcdonald](https://forum.magicleap.cloud/u/michaelbjmcdonald)\ **Post date:** [September 28, 2022, 12:33pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949/6 "2022-09-28T12:33:30Z")
Thanks, I understand this. But I need to know if it will still be able to fallback to the non-camera dependant tracking system– and have the controller run 100% of the time without the need of any tracking cameras. Cheers ---
**Author:** ![mr.elenbaas](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.magicleap.cloud/mr.elenbaas/32/207_2.png) [@mr.elenbaas](https://forum.magicleap.cloud/u/mr.elenbaas)\ **Post date:** [September 28, 2022, 3:00pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949/7 "2022-09-28T15:00:11Z")
This is just my anecdotal experience. When I'm standing still, the controller can go out of view and still perform well enough without disconnecting. When I'm moving, the controller disconnects almost immediately when it loses line of sight. GoKart & FigmanXR for an example: [FigmanXR and GoKarts and MagicLeap 2 - YouTube](https://youtu.be/E6EoXKnMoRA) Hope that helps. ---
**Author:** ![sengelman](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.magicleap.cloud/sengelman/32/11_2.png) [@sengelman](https://forum.magicleap.cloud/u/sengelman)\ **Post date:** [September 28, 2022, 6:11pm UTC](https://forum.magicleap.cloud/t/does-the-ml2-controller-totem-still-use-the-same-magnetic-field-tracking-technology-as-the-ml1/949/8 "2022-09-28T18:11:41Z")
@mr.elenbaas this looks more empirical than anecdotal. I'll report this to our Controller team.