How to make a double authentication for a website?

Good evening. There was a need to implement dual authentication when you log on to the website. Has anyone faced with this task? I can't find any article on implementation.
Thank you
August 19th 19 at 23:05
2 answers
August 19th 19 at 23:09
Just type in search "configure two-factor authentication on the website". There are many manuals for different CMS, including for dummies (manuals, not CMS).

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