The idea of having a mandatory requirement of using online ids and removing anonymity from the Internet isn't too bright, and also opens up a gigantic single point of failure with the government login / authentication systems.
However, I'm more interested in whether any government at all allows third parties to use their ids for third party authentication, maybe something like having an OpenId server support like how Google, Facebook etc. logins can be used as the primary login on some other sites. This would potentially allow for someone who cares about 'fake reviews' so much, to allow people to authenticate using their presumably properly vetted govt id. Then, it would be up to that individual site to choose whether it should also allow other account types, whether using free email or their own site based solution etc. This makes it feasible to mark reviews that are from 'trusted sources' (trust as in, person has a verifiable identity and he can't just discard it for a new one easily) while allowing other reviews or even disabling that if desired.
I could see this as being actually very useful for certain scenarios, specifically thinking of the constant and currently-insoluble problem of trolls in online games. Say that Blizzard as a new MMO with Server A only allowing logins using trusted credentials. A user with govt id makes an account, chooses a nickname and starts playing as usual. But if he is banned for cheating or trolling, he can't just make a new account, as governments don't exactly let you have a different DL # or passport # without a really good reason. Those who don't want to or are unable to use a trusted id, would instead get to play on Server B which would not be used for official tournaments etc.
This kind of approach would see governments leverage their existing identity verification as a supporting mechanism to enable opt-in usage by commercial entities. Which also means that it will only be used when it makes sense and not just a new mechanism to track everyone's actions online. Sure, if Amazon.eu decides that fake reviews are a grave issue and only verified users can post them, that's fine - people can still leave anonymous comments elsewhere, and others will use whichever has more useful information. Certainly, besides the 'fake' comments there may be honest commenters who simply don't want to get sued for strong language or w/e.
So, back to my question - are there OpenId or similar authentication endpoints that EU or any of its member states make available currently?