Recently Gmail provided the two level password security to their users.
step 1 : normal password and
step 2 : secret code in Mobile.
This feature is excellent. and challenging to the hackers.
Today I read an article in the following site.
Authenticating users beyond the password
In this article, the author discusses the way in which the authentication can be made. There are three classic "factors" that can be used to confirm a users' identity:
- Using something only the user knows
- Using something unique the user has
- Using something that only the user is
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