Who has two factor authentication?

Who has two factor authentication?
Two-factor authentication (also known as 2FA) is a type, or subset, of multi-factor authentication. It is a method of confirming users' claimed identities by using a combination of two different factors: 1) something they know, 2) something they have, or 3) something they are.

Reference:
Multi-factor authentication - Wikipedia
Aug 3, 2019

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