User Identity Verification Based on Recognition of Typing Style
Cao Li-ming · Jisuanji gongcheng · 2005
Based on characteristic typing style of an arbitrary user, a scheme to distinguish whether a keystroke series is made by a specific user or not is proposed. The cityblock distance between samples stored in advance and the new input sample is the criterion of identity verification. This scheme uses a nonparametric method, that is, Spearman correlation analysis, to calculate the weights for computing the cityblock distance. So the variety of possible probability distributions of keystrokes is not a regulation. A user identity verification system also has been implemented successfully with Java.