The Vice President for the Digital Single Market on the European Andrus Ansip, is planning to allow people to sign into social media using their government issued ID cards. The paper itself says:
However, large parts of the public remain apprehensive about data collection and consider that more transparency is needed. Online platforms must respond to these concerns by more effectively informing users what personal data is collected and how it is shared and used, in line with the EU data protection framework. More generally, this issue includes the ways in which users identify themselves in order to access online platforms and services. It is recognised that a multitude of username and password combinations is both inconvenient and a security risk. However, the frequent practice of using one’s platform profile to access a range of websites and services often involves non-transparent exchanges and crosslinkages of personal data between various online platforms and websites. As a remedy, in order to keep identification simple and secure, consumers should be able to choose the credentials by which they want to identify or authenticate themselves. In particular, online platforms should accept credentials issued or recognised by national public authorities, such as electronic or mobile IDs, national identity cards, or bank cards.
Andrus Ansip, the man promoting this idea, is from Estonia, a country is known for forcing all of its government's online services behind data from state-issued ID cards.
Along with previous reports that the EU was planning a union-wide ID card, this may mean that, like Estonia, certain government services will be locked behind this ID system.