Authentication: what is common between a refrigerator and a gun?

All with Friday, dear habravchane! As you know, in our Mail, Calendar and Cloud two-factor authentication is used. During the months that have passed since its introduction, the support service has accumulated enough factual material, which makes it clear: many users (and even advanced) are confused in technical terms. From what we took it - under a cat.

To begin with, many users confuse the concepts of “authentication”, “authorization” and “identification”. As Wikipedia tells us:

• Authentication - authentication procedure.
• Authorization - granting rights to perform certain actions; as well as the process of verification (confirmation) of these rights.
• Identification - recognition of identity, identification of objects, identification.

As you can see, the meaning of these three terms is different. Someone already knows about this, someone now has learned something new for himself, and someone will say that some of the definitions are identical, just described in different words. As practice shows, many users who contact our support service are desperately confused by terms when they talk about two-factor authentication. And today we decided to share with you the most interesting examples from the appeals of users. So, how do people call two-factor authentication? The list is read below, the author's spelling is fully preserved (Grammar-Nazi is indignant). And we tried to illustrate eight of them, which drawing belongs to what - try to guess yourself.
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two-stroke protection
double password
dual-exposure protection
two-factor authentication
two-level authentication
double-bar authentication
two-way authentication
two-layer identification
two sided thing
two-tier protection
two-dimensional to another phone
dual core authentication
two stroke detection
double-sided spanning
double fixation
two-way authentication
dual authorization
dual contact authentication
two-time authentication
dual core authentication
sms two fact with number
two-time authentication
dual function
push-pull authentication code + sms
new sewn dual-bar
double authenticity
two-way protection
two-way authentication
two-factor modification
two-vector identification
two-fold authentication
two-player authentification
dual authentication
two-story authentication
two times the charge
two-front autheficacy
two-level identification
two-vector identification
two chamber auntifikytsya
two-sided authentification
bivocate authenticator
bicameral shit
dvuhvostnaya protection
dual-exposure protection

And what are the names of complex technical terms you have heard?