Why cant EU have something like Adhar (ID-verification for Indians) https://uidai.gov.in/en/

It captures biometrics and is used across India to easily verify identification using OTP on mobile. Used across almost every sphere - bank accounts, passport, financial services like stocks/mutual funds etc.

You get a unique adhar-id (or can generate virtual IDs if sharing temporarily) to verify your identity across any service.

To paraphrase Napoleon - because India has the will to do it, and the EU does not.