Oh, that's simple. Just have the law require all end user OSes to have government-verified ID check functionality that is out of the user's control and the integrity of it protected by Secure Boot.

Accessing any online service with an operating system capable of manipulating or bypassing the check will be considered some flavor of hacking or fraud.

Boom, done. All the privacy activists go into the slammer and Microsoft gets to sell a new version of Windows to everyone.