The "vaccine passport" can be your login credentials

To see how a biometric chip can be used to access the Internet, check out pages 7-13 in the following document. Page 14 talks about how your biometric data can be extracted from the card by the authorities.

The electronic residence permit https://www.bamf.de/SharedDocs/Anlagen/EN/MigrationAufenthalt/ElektronischerAufenthalt/broschuere-eat-a4-en.pdf?__blob=publicationFile&v=10

Originally, they allowed people to opt out of the online function of these biometric ID cards. This is no longer the case.

Important Information on the new electronic German ID Card https://www.germany.info/us-en/service/02-PassportsandIDCards/id-card-important-information/917866

On July 8, 2017, the law to promote the electronic identity verification went into effect. The passport law has been changed so that from now on a German Identity Card will always be handed out with an electronic ID function (online function), unless the applicant is under 16 years of age when applying for the ID card (see § 10 Abs. 1 PAuswG).

Because of this new regulation, the possibility of choosing the German ID Card with activated or deactivated online function is no longer available. From now on, German ID Cards are manufactured and handed out with activated online function only. It is not possible anymore to receive a German ID Card with deactivated online function.

I believe they will use that same method to get people to accept the new Internet. They will continue changing the rules and adopt the Chinese social credit score to make political dissent impossible just as it is in many other dictatorships.