Hi,

Please check the size of the target. When you create the Image target in Target Manager you need to set a width, this needs to the same as the physical target.

Hope this helps.

Vuforia Engine Support

I am facing the same issue. How did you solve it?

I am very new to Unity, I've developed a simple AR application using the Vuforia 9 and Unity 2019.3. While my app runs perfectly when I use the webcam of my desktop. But it does not run on my android device OnePlus6 The camera of my device opens but it does not recognize the printed target. Do you have any idea what's going wrong? Any help is appreciated.

Thank you in advance.

Hi, today i had the same problem(with vuforia 6.2.10 and unity 5.6.1) but now i got my app working. So i will tell you what i did hoping that help you to make your app working aswell.

i tested on 2 devices and got the results below:

Asus Zenfone Go: app was not recognizing the images

Motorola Z Power: got the message "Your app key is missing"

1 - Deleted every single file/folder of vuforia package from my project. Trying to reimport the assets you can see the files and folders so you can delete them without any problem. you will get some missing stuff on the scene but you should be ok later, i recommend that you save your project before reimport vuforia package, close the unity and then reimport.

2 - Try development build and see if it is working, if not, stay in development build until it works with the next steps.

3 - Player settings: Here was the tricky part for me(i think).

    a: unchecked split application binary option at Publishing Settings

    b: i was exporting the same version, replacing the apk file and getting the problem every time, change your version and bundle version code, the name of the apk file will be changed automatically.

this is what i did to make it work again. Good luck trying, i hope that it helps you.

PS: Still learning english.

Hello anaststam,

Someone else has recently posted a thread with issues on that device: https://developer.vuforia.com/forum/android/samsung-s5-mini-g800f

I'll respond there with any updates on the issue.

Thanks,

-Vuforia Support