Some additional notes:

- you can download the latest Vuforia 4.0.11 beta that was released on February 06 (this introduces several enhancements w.r.t. the previous 4.0.5 released in December)

- when copying the License Key from the License Manager, make sure no extra/blank spaces are appended at the beginning/end of the key string

- it appears that on Firefox browser there may be some issues when using the "Copy To Clipboard" button, so, you can try using a different browser or manually copy the license key by selecting it via mouse drag (again, paying attention to not accidentlly include any extra space)

@ dfelber:

if you have issues with the License Key creation upon logging in with your account, you can send an inquiry to:

https://developer.vuforia.com/support/contact/login

(please specify that the issue is about the 4.0 Beta )

I would also love to upgrade to Vuforia 4 beta - but I can't even create an App Key at https://developer-beta.vuforia.com/target-manager.

It does not say anything after I entered my email/password - just redirects me to the same page over and over again.

Login data must be correct, or I wouldn't be able to download the unitypackage of the beta.

Can you PM me your App name and App License Ley, so that we can verify internally ?

When i use the play mode it works . But when i tried it to my device that thing is showing up(the invalid key message).

@kimkaye17:

is this happening in Play Mode or when running on device ?

Yes my internet connectivity is On . But still i'm getting this "Invalid key used. Please make sure you are using a valid Vuforia App key" .. I Doubled check my keys and they are perfectly correct.

Have you checked that your internet connection is enabled ?

i already put may license key in Arcamera .. but I'm getting Invalid Key although i paste the right key. I don't know what is the problem.

In Unity, you can simply copy-paste the key into the license key field in the ARCamera inspector view, in the Unity Editor. If you have a valid key, this should work.

Cool, I eventually found this link.

https://developer-beta.vuforia.com/library/articles/Solution/How-To-add-a-License-Key-to-your-Vuforia-App

It works for the iOS apps, however I tried it with the Penguin Unity app, but I keep getting a "Vuforia App key is missing." when I did add it ARCamera file. Any ideas?

Hi,

You can enter it in:

QCAR::setInitParameters(mQCARInitFlags,"<Your app key>")

in initQCARInBackground method.