The solution is zk verifiable credentials, which would let folks prove their age without revealing their DOB (or anything else on their ID) to third parties.
This is possible today with complete privacy for people with biometric IDs and biometric passports (ie most passports, EU IDs, Aadhaar IDs, and more) using a service like self.xyz
This is possible today with complete privacy for people with biometric IDs and biometric passports (ie most passports, EU IDs, Aadhaar IDs, and more) using a service like self.xyz