Well imagine you’re in someone else’s house or at a school pc, etc, and you gotta log in. Even though there’s the option to “do not save” the password upon logging in, cookies are there and well there’s ways of actually finding the password even though you clicked not to.
Due to this, making it a secure process of encryption with a one use only password (OTP) makes it easy and secure to log in someone else pc using the OTP. Just bring your phone to receive it.
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