Late answer but just a note that if you're interested in the tech aspect of it, then the Estonian ID cards implement the IAS ECC spec for all the public key stu

Late answer but just a note that if you're interested in the tech aspect of it, then the Estonian ID cards implement the IAS ECC spec for all the public key stuff: > The application enabling PKI functionalities in Estonian eID Documents is IAS-ECC, a sophisticated but standardised solution conforming to CEN TS 15480-2 (European eID) with extra features.