| 摘要 |
<p>Apparatus for establishing personal authentication based on signatures comprises pen means for writing a signature on a surface; means for recording characteristics of the signature in terms of variations in applied force as between said pen means and surface with elapsed time; means for comparing said characteristics with characteristics of a previously-recorded signature and means for notification o an authentication decision based on said comparison. The pen means does not necessarily leave a visible trace and optionally includes a pressure-sensitive transducer, although the surface may include a pressure-sensitive transducer. The invention provides an information stream, preferably digitised, for a reference or specimen signature and relating to variations in force, applied by the user via an input device to the signature-receptive surface, with elapsed time in writing the signature. The information stream is unique to the user, even in the case of visually-identical signatures written by different people, and can thus be used for comparing the reference of specimen signature with that of a would-be customer or the like to establish a reliable means of discriminating between the authorised person and an impostor.</p> |
