Is it possible to identify a person with keystroke dynamics?
Keystroke identification has a rich history lasting almost two hundred years.
Keystroke dynamics recognition (KDR) has been known since the 19th century: telegraphy operators could identify each other remotely by the manner of electric key typing (keystroke). Some authors even compared its uniqueness to the human voice.
As a biometric modality, it focuses on the behavioral traits of a person: typing speed, the amount of blunders, preferred key combinations or hot keys, etc. A similar method was used during WWII to identify enemy operators disguising themselves as friendlies.
At the same time, KDR suffered from lower permanence as typing dynamics may change due to fatigue and other factors.