Handwritten biometrics can be split into two main categories:
Static: In this mode, users writes on paper, digitize it through an optical scanner or a camera, and the biometric system recognizes the text analyzing its shape. This group is also known as "off-line".
Dynamic: In this mode, users writes in a
digitizing tablet, which acquires the text in real time. Another possibility is the acquisition by means of stylus-operated PDAs. Dynamic recognition is also known as "on-line". Dynamic information for
handwriting movement analysis usually consists of the following information: • spatial coordinate x(t) • spatial coordinate y(t) • pressure p(t) • azimuth az(t) • inclination in(t) Better accuracies are achieved by means of dynamic systems. Some technological approaches exist. == Difference from OCR ==