Does Android offer ways to sign a proof of a unique hardware device?
It can be a cryptographic proof; it does not need to be fixed id, so it can be used for tracking
This would be mainly used to combat spam/bots
The assumption is that if we can have proof of real hardware devices, any spammer does not have access to a significant number of hardware devices (thousands)
The proof would not be used to track users
The proof would need to be generated and checked only once per user
Are there other alternatives for such proofs in Android/Google ecosystem?
