Multi-factor Authentication(MFA)often referred to as Two-factor Authentication(2FA),which is a subset of MFA,is the practice of implementing additional security methods on top of a standard username and password to help authenticate the identity of a user and increase the security of data.This chapter will investigate the problem with username and password logins,the different types of authentication,current best practice for multi-factor authentication and interpretations about how the technology will grow in the upcoming years.
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