How does keystroke dynamics recognition work?

From Antispoofing Wiki

Keystroke dynamics recognition analyzes unique behavioral traits intrinsic to keyboard typing.

Keystroke dynamics recognition or KDR focuses on how a particular person types on a keyboard. It analyzes such attributes as tempo, time intervals, frequent key combinations and other nuances inherent to how a person types.

Uniqueness of the method has been known since the era of electric telegraphy. During WWII it was used to identify hostile impostors who tried to spread disinformation under the guise of friendly operators.

To employ this method, a person is prompted to type a text. After that an authentication profile is created by the system — it will perform biometric verification every time a subject enters a password.

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