What is a Facebook login?

Related questions

1. How do Facebook accounts get hacked?
2. How can I recover my old Facebook account?
3. How do I find my old Facebook account?
4. How did Facebook get hacked?
5. How do I find my Facebook accounts?
6. Has Facebook been hacked today?
7. How do I send an email to Facebook?
8. What is Facebook free mode?
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Tags

1. #authentication
2. #across
3. #create
4. #platforms
5. #facebook
6. #login
7. #simply
8. #multiple
9. #convenient
10. #accounts
11. #people
12. #access