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by justin66 3042 days ago
That's not "biometric." I assumed the OP had something in mind more specific.
1 comments

In India, all SIM cards have to be linked to Aadhar card , which is a unique identifier of a person with biometrics attached
Thanks. The wikipedia article on Aadhar card looks like a deep dive...

https://en.wikipedia.org/wiki/Aadhaar

And if you are a foreigner the SIM linked to your passport, which is linked to your fingerprints that they take upon immigration.