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Solved
Problems with getting serial numbers after update to v39
Ever since our Quest 2s have started updating to v39, our applications are no longer able to find their device's serial numbers. This is breaking a lot of our work by preventing us to properly comm...
Unfortunately it seems you are right. Meta have responded to us (and another user who we spoke to on Reddit), that they cannot do anything for us.
For everyone else with this problem, to summarize:
You will have to come up with your own identification system, as using serial numbers is no longer supported as of Android 10. There is nothing you, or Meta/Oculus can do to change this. For a more detailed description, you can read ratmat2000's comments.
As of right now, Oculus has told us that they are aware of the issue and are looking into this. We are, however, worried that Oculus will just say they can't help us and we will have to figure something out on our own.
I think it is a good time for everyone to start thinking about our own identifier system just in case, but still hold out a little hope that Oculus might find a fix.
I find it highly doubtful that Meta will try to “fix” this issue. This is a constraint imposed by Google and Android 10 as they seek to match Apple’s privacy sandbox. Both Apple and Google have pushed for years to remove all available unique device identifiers including the serial number. Oculus is now being treated like any other consumer browsing device (smart phone, tablet, etc).
Moving forward, I expect everyone will be required to force their users through clunky username/password login systems.
Unfortunately it seems you are right. Meta have responded to us (and another user who we spoke to on Reddit), that they cannot do anything for us.
For everyone else with this problem, to summarize:
You will have to come up with your own identification system, as using serial numbers is no longer supported as of Android 10. There is nothing you, or Meta/Oculus can do to change this. For a more detailed description, you can read ratmat2000's comments.