# \#marker-tracker **URL:** https://forum.magicleap.cloud/tag/marker-tracker/62.md [Latest](https://forum.magicleap.cloud/latest.md) · [Categories](https://forum.magicleap.cloud/categories.md) · [Tags](https://forum.magicleap.cloud/tags.md) --- ## [Marker Understanding not Accurate and Custom parameters not working](https://forum.magicleap.cloud/t/marker-understanding-not-accurate-and-custom-parameters-not-working/4895)
**Author:** [@cagatay](https://forum.magicleap.cloud/u/cagatay)\ **Replies:** 5\ **Last updated:** [April 14, 2026, 12:16am UTC](https://forum.magicleap.cloud/t/marker-understanding-not-accurate-and-custom-parameters-not-working/4895 "2026-04-14T00:16:30Z")
Give us as much detail as possible regarding the issue you're experiencing: Unity Editor version: 2022.3.54 ML2 OS version: 1.11.0 Unity SDK version: 2.6.0 Host OS: (Windows/MacOS): windows Hi, I am expriencing mark… --- ## [Unity Marker Tracking Delayed](https://forum.magicleap.cloud/t/unity-marker-tracking-delayed/6806)
**Author:** [@harperrhett](https://forum.magicleap.cloud/u/harperrhett)\ **Replies:** 2\ **Last updated:** [January 23, 2026, 7:05pm UTC](https://forum.magicleap.cloud/t/unity-marker-tracking-delayed/6806 "2026-01-23T19:05:39Z")
Unity Editor version: 6000.3.0f1 ML2 OS version: 1.12.1 Unity SDK version: 2.6.0 Host OS: Windows Hello! This is somewhat of a feature request and an issue. My team is using an Aruco tag to track a moving object. The… --- ## [Marker Tracking in Unreal Engine returns Camera Origin](https://forum.magicleap.cloud/t/marker-tracking-in-unreal-engine-returns-camera-origin/6422)
**Author:** [@mto\_ar](https://forum.magicleap.cloud/u/mto_ar)\ **Replies:** 1\ **Last updated:** [October 8, 2025, 8:51pm UTC](https://forum.magicleap.cloud/t/marker-tracking-in-unreal-engine-returns-camera-origin/6422 "2025-10-08T20:51:56Z")
Magic Leap SDK version: 1.8 Unreal Engine version: 5.4.4 ML2 OS version: 1.12 Marker tracking now only returns camera origin position when scanning qr codes. Set up the same as the Unreal engine marker tracking guide. … --- ## [XR Repositioning to match ArUco markers with world center](https://forum.magicleap.cloud/t/xr-repositioning-to-match-aruco-markers-with-world-center/6073)
**Author:** [@juanjose.garrido](https://forum.magicleap.cloud/u/juanjose.garrido)\ **Replies:** 2\ **Last updated:** [July 28, 2025, 2:35pm UTC](https://forum.magicleap.cloud/t/xr-repositioning-to-match-aruco-markers-with-world-center/6073 "2025-07-28T14:35:07Z")
Give us as much detail as possible regarding the issue you’re experiencing: Unity Editor version: Unity 6000.0.43f1 ML2 OS version: 1.12.0 Unity SDK version: 2.6 Host OS: Windows 11 Hello! I’m creating a multiplayer… --- ## [Scanned marker's Pose at world origin](https://forum.magicleap.cloud/t/scanned-markers-pose-at-world-origin/6026)
**Author:** [@j.g.hoevenberg](https://forum.magicleap.cloud/u/j.g.hoevenberg)\ **Replies:** 1\ **Last updated:** [July 10, 2025, 5:38pm UTC](https://forum.magicleap.cloud/t/scanned-markers-pose-at-world-origin/6026 "2025-07-10T17:38:06Z")
Give us as much detail as possible regarding the issue you’re experiencing: Unity Editor version: Unity 6000.0.29f1 ML2 OS version: 1.12.0 Unity SDK version: 2.6.0 Host OS: (Windows) Error messages from logs (syntax… --- ## [Add Marker to mesh/space](https://forum.magicleap.cloud/t/add-marker-to-mesh-space/5945)
**Author:** [@rayz0\_0](https://forum.magicleap.cloud/u/rayz0_0)\ **Replies:** 1\ **Last updated:** [June 30, 2025, 3:41pm UTC](https://forum.magicleap.cloud/t/add-marker-to-mesh-space/5945 "2025-06-30T15:41:53Z")
Hey, I have a few questions regarding “Spaces”: Is there a way to place ArUco/QR markers in the Space and use them as reference points for localization? So that the glasses do not only orient themselves to the generat… --- ## [Getting XR\_ERROR\_HANDLE\_INVALID error when tracking](https://forum.magicleap.cloud/t/getting-xr-error-handle-invalid-error-when-tracking/4859)
**Author:** [@pon](https://forum.magicleap.cloud/u/pon)\ **Replies:** 14\ **Last updated:** [January 17, 2025, 6:21pm UTC](https://forum.magicleap.cloud/t/getting-xr-error-handle-invalid-error-when-tracking/4859 "2025-01-17T18:21:30Z")
Magic Leap Remote Rendering 1.16.92 Unreal Plugin 1.8 UE 5.4.4 ML2 OS 1.110 This is a follow up to this thread, which is closed. Hi. I'm trying to track Aruco markers. I have it working and can get the headset to … --- ## [Photon Fusion and colocation for SDK 2.5.0 and OpenXR](https://forum.magicleap.cloud/t/photon-fusion-and-colocation-for-sdk-2-5-0-and-openxr/4649)
**Author:** [@kudos](https://forum.magicleap.cloud/u/kudos)\ **Replies:** 2\ **Last updated:** [November 21, 2024, 11:43pm UTC](https://forum.magicleap.cloud/t/photon-fusion-and-colocation-for-sdk-2-5-0-and-openxr/4649 "2024-11-21T23:43:04Z")
Unity Editor version: 2022.3.11f1 ML2 OS version: 1.9.0 Unity SDK version: 2.5.0 Host OS: Windows Hello, I'm wondering when the "Building Multi-User ML2 applications with Photon Fusion" documentation (Photon Fusion … --- ## [Cannot get Marker Tracking to work (ArUco)](https://forum.magicleap.cloud/t/cannot-get-marker-tracking-to-work-aruco/4371)
**Author:** [@wiltabone](https://forum.magicleap.cloud/u/wiltabone)\ **Replies:** 14\ **Last updated:** [October 11, 2024, 2:11pm UTC](https://forum.magicleap.cloud/t/cannot-get-marker-tracking-to-work-aruco/4371 "2024-10-11T14:11:48Z")
Give us as much detail as possible regarding the issue you're experiencing: Unity Editor version: 2022.3.38f1 ML2 OS version: 1.3.1 Unity SDK version: 2.4.0 MRTK3: 1.2.0 Host OS: (Windows) Hi, I have been trying t… --- ## [Marker pose rotation value differ even if the QR place in the same location](https://forum.magicleap.cloud/t/marker-pose-rotation-value-differ-even-if-the-qr-place-in-the-same-location/4214)
**Author:** [@acharya](https://forum.magicleap.cloud/u/acharya)\ **Replies:** 4\ **Last updated:** [September 13, 2024, 3:32pm UTC](https://forum.magicleap.cloud/t/marker-pose-rotation-value-differ-even-if-the-qr-place-in-the-same-location/4214 "2024-09-13T15:32:02Z")
Hi folks, I am trying to detect a marker and wanted to aligned the CAD model to the marker. However, the model is not properly aligned with the marker. To troubleshoot, I checked the rotation values using the following… --- ## [Feedback on OpenXR marker tracking](https://forum.magicleap.cloud/t/feedback-on-openxr-marker-tracking/4003)
**Author:** [@localjoost](https://forum.magicleap.cloud/u/localjoost)\ **Replies:** 13\ **Last updated:** [September 10, 2024, 9:24am UTC](https://forum.magicleap.cloud/t/feedback-on-openxr-marker-tracking/4003 "2024-09-10T09:24:42Z")
Hi folks, I have been messing around with the new OpenXR marker tracking and even went so far as to develop a Reality Collective Service Framework service for it, abstracting the actual platform specific tracking code i… --- ## [Use of Vuforia Engine along with Magic Leap Marker Tracking](https://forum.magicleap.cloud/t/use-of-vuforia-engine-along-with-magic-leap-marker-tracking/3830)
**Author:** [@stradiot95](https://forum.magicleap.cloud/u/stradiot95)\ **Replies:** 5\ **Last updated:** [July 31, 2024, 6:58am UTC](https://forum.magicleap.cloud/t/use-of-vuforia-engine-along-with-magic-leap-marker-tracking/3830 "2024-07-31T06:58:49Z")
Hello! I'm trying to develop an application in which i track a QR code through Vuforia, and in the meanwhile i track an object composed of Aruco/AprilTag markers. Both of methods work independently, but not together. Vu… --- ## [Issue with MagicLeapMarkerUnderstandingFeature](https://forum.magicleap.cloud/t/issue-with-magicleapmarkerunderstandingfeature/3772)
**Author:** [@flesage111](https://forum.magicleap.cloud/u/flesage111)\ **Replies:** 13\ **Last updated:** [July 17, 2024, 3:05pm UTC](https://forum.magicleap.cloud/t/issue-with-magicleapmarkerunderstandingfeature/3772 "2024-07-17T15:05:56Z")
Give us as much detail as possible regarding the issue you're experiencing. Unity Editor version (if applicable): 2022.3.16f1 ML2 OS version: latest Here is my code: Error messages from logs (syntax-highlighting i… --- ## [ML Spectator is not working with OpenXR](https://forum.magicleap.cloud/t/ml-spectator-is-not-working-with-openxr/3582)
**Author:** [@csabai.tamas.93](https://forum.magicleap.cloud/u/csabai.tamas.93)\ **Replies:** 8\ **Last updated:** [July 9, 2024, 4:36pm UTC](https://forum.magicleap.cloud/t/ml-spectator-is-not-working-with-openxr/3582 "2024-07-09T16:36:37Z")
Unity Editor version: 2022.3.29f1 ML2 OS version: 1.7.0 Unity SDK version: 2.2.0 Host OS: Windows OpenXR: 1.11.0 ML Spectator: 1.3.3 Hello, I'm seeking help with an issue I've encountered while implementing ML Spe… --- ## [Reducing memory usage of marker tracking service?](https://forum.magicleap.cloud/t/reducing-memory-usage-of-marker-tracking-service/3639)
**Author:** [@om-iman](https://forum.magicleap.cloud/u/om-iman)\ **Replies:** 9\ **Last updated:** [July 3, 2024, 4:43pm UTC](https://forum.magicleap.cloud/t/reducing-memory-usage-of-marker-tracking-service/3639 "2024-07-03T16:43:16Z")
We're running into a sporadic crash that seems to be occurring when the marker tracking service is activated. The logs seem to have a reference to 'lowmemorykiller' being active. The top two processes taking up memory … --- ## [OpenXR Marker Understanding Feature finding markers, but returning a zeroed out pose](https://forum.magicleap.cloud/t/openxr-marker-understanding-feature-finding-markers-but-returning-a-zeroed-out-pose/3556)
**Author:** [@chaseryals219](https://forum.magicleap.cloud/u/chaseryals219)\ **Replies:** 44\ **Last updated:** [May 29, 2024, 7:32pm UTC](https://forum.magicleap.cloud/t/openxr-marker-understanding-feature-finding-markers-but-returning-a-zeroed-out-pose/3556 "2024-05-29T19:32:25Z")
Give us as much detail as possible regarding the issue you're experiencing: Unity Editor version: 2022.3.5f1 ML2 OS version: 1.6.0 Unity SDK version: 2.1.0 Host OS: Windows Error messages from logs (syntax-highlight… --- ## [Object Offset while tracking the marker](https://forum.magicleap.cloud/t/object-offset-while-tracking-the-marker/3485)
**Author:** [@darshak.sitapara.softwe](https://forum.magicleap.cloud/u/darshak.sitapara.softwe)\ **Replies:** 8\ **Last updated:** [May 27, 2024, 5:59pm UTC](https://forum.magicleap.cloud/t/object-offset-while-tracking-the-marker/3485 "2024-05-27T17:59:20Z")
I have used a the code provided by magic leap for marker detection. the object is in world space, all the XR rig and main camera is at its origin or 0 position. It seems that selecting ArUco Dict does not help much eithe… --- ## [Marker Tracker Causes Droped Frames When Calling Start](https://forum.magicleap.cloud/t/marker-tracker-causes-droped-frames-when-calling-start/3469)
**Author:** [@simone.galvani](https://forum.magicleap.cloud/u/simone.galvani)\ **Replies:** 3\ **Last updated:** [April 30, 2024, 9:10pm UTC](https://forum.magicleap.cloud/t/marker-tracker-causes-droped-frames-when-calling-start/3469 "2024-04-30T21:10:35Z")
Hello everyone, I have some problems related to marker tracking after upgrading the Magic Leap 2 operating system to the latest version. Using the QR scanner with OS version 1.3.0 everything was fine. When I upgraded t… --- ## [MagicLeap Marker Tracker Example (OpenXR) does not update](https://forum.magicleap.cloud/t/magicleap-marker-tracker-example-openxr-does-not-update/3074)
**Author:** [@miwehrli](https://forum.magicleap.cloud/u/miwehrli)\ **Replies:** 4\ **Last updated:** [April 1, 2024, 7:20pm UTC](https://forum.magicleap.cloud/t/magicleap-marker-tracker-example-openxr-does-not-update/3074 "2024-04-01T19:20:05Z")
Hi folks, We tried to use your new Marker Tracker Example (Marker Tracker Example | MagicLeap Developer Documentation). Unfortunately, the Marker Tracker Example using OpenXR does not update the position of the marker! … --- ## [How to adjust camera settings (shutter speed/exposure) to reduce motion blur for marker tracking?](https://forum.magicleap.cloud/t/how-to-adjust-camera-settings-shutter-speed-exposure-to-reduce-motion-blur-for-marker-tracking/1493)
**Author:** [@alex.teepe](https://forum.magicleap.cloud/u/alex.teepe)\ **Replies:** 9\ **Last updated:** [February 24, 2023, 5:02pm UTC](https://forum.magicleap.cloud/t/how-to-adjust-camera-settings-shutter-speed-exposure-to-reduce-motion-blur-for-marker-tracking/1493 "2023-02-24T17:02:10Z")
Hi, I'm wondering if it's possible to adjust the main camera settings (shutter speed/exposure) to reduce motion blur or get sharper images in a video capture? I'm using a 4k video feed from the main camera and attemptin…