Effects of Writing Speed Upon Modes of Signature Simulation: A Kinetic Analysis
Keywords:freehand signature simulation, tracing, pen pressure, motor program
To better distinguish between traced and freehand signature simulations, 12 participants practiced upon a WACOM SD420 graphics tablet tracing a historical signature at Slow or Very Slow speeds, with a subsequent comparison of freehand and traced signature simulations. Kinematic analyses focused upon stroke efficiency and pressure, while computer algorithms determined variability of simulations around an original. Traced simulations had reduced spatial variability after practice. Very Slow simulations were more dysfluent, had greater spatial error and employed more pressure. Pen pressures varied more with speed during freehand reproductions. Writing speed was an important contributor to line quality and spatial correspondence during signature simulation.
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