Facebook tool protects other accounts when hackers strike email
Found on CNet News on Monday, 30 January 2017
The tool is part of Facebook's larger push to develop technology that will make passwords unnecessary, Hill wrote.
To use this tool, you'll have to wait for your favorite web services to implement it. Facebook released an open-source protocol that any online service can use to let you prove you are who you say you are with your Facebook account.
In return, you let FB know of all the services you are using, making your profile there even more complete and valuable for advertisers.