In our project we're using safetynet for attestation, but we need to migrate project into google play integrity API because safetynet is deprecated. We're not using google play to distribute our app, so I need to link our app with project on google cloud.
Linking is available only with using google cloud project number which I need to pass with setCloudProjectNumber() method in my request.
And this is my doubt - linking app with google play integrity ONLY with google cloud project number. Not with using firebase, nor with generated api key from google cloud restricted to Google Play Integrity API. I noticed that using play integrity requests consume my requests daily limit (10000) to google play integrity API what I can check here.
My question is: Is this the only protection - knowing google cloud project number - to prevent using someone else's requests limit to google play integrity API?
I checked google documentation, but I cannot found information about requests limit protection. The only thing I found is a form to request Google for increase the limit - form.
Imo, I didn't understand something and Google Play Integrity service limit for my project is protected by something else, not only by number.
I tried to disconnect my app with firebase by using different package name, but my request limit was still consumed when I was sending requests to Google Play Integrity API.