System, electronic pen and method for the acquisition of the dynamic handwritten signature using mobile devices with capacitive touchscreen
First Claim
1. A system for the acquisition and processing of information associated with a dynamic handwritten signature, including an electronic pen with which the signature is made and a capacitive touchscreen mobile device on which the signature is made, in order to be sent to an authentication server to validate the signature authenticity, the electronic pen comprising a housing which allows the transmission of static electricity to a pen tip, and being equipped with two groups of inertial acceleration sensors, the first group of inertial acceleration sensors being located closer to the tip of the electronic pen, and the other group of inertial acceleration sensors being located at a distance d of at least 30 mm from the first group, sufficient to emphasize the spatial kinetic information of the signature, which captures the kinetic information (ax, ay, bx, by), and an acquisition microcontroller which takes the information from the two groups of sensors and transmits it as it is acquired to a power and communication module, said capacitive touchscreen mobile device comprising means for capturing data sets (x, y, t), where (x, y) represents the absolute graphical coordinates, expressed in pixels, of the pen tip position in contact with the capacitive touchscreen during the signing process, at time t, expressed in milliseconds, wherein the information captured by the electronic pen and the capacitive touchscreen mobile device are then processed, synchronized and stored on said capacitive touchscreen mobile device.
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Abstract
The invention describes a system, an electronic pen and a method for the acquisition and processing of the bio-kinetic information associated with the signature, in order to send this information to an authentication server for authenticity validation. The system includes an electronic pen (1), comprising a housing and a tip made of capacitive materials, two groups of MEMS inertial sensors, MEMSA and MEMSB, an acquisition microcontroller (P7), and a capacitive touchscreen mobile device (2). The information captured by the electronic pen and the capacitive touchscreen mobile device are then processed, synchronized and stored. The method comprises the steps of: establishing the signature start time, acquiring the graphical and temporal information, establishing the signature stop time, associating and synchronizing the kinetic information from the electronic pen (1) with the graphical information from the capacitive touchscreen mobile device (2).
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Citations
6 Claims
- 1. A system for the acquisition and processing of information associated with a dynamic handwritten signature, including an electronic pen with which the signature is made and a capacitive touchscreen mobile device on which the signature is made, in order to be sent to an authentication server to validate the signature authenticity, the electronic pen comprising a housing which allows the transmission of static electricity to a pen tip, and being equipped with two groups of inertial acceleration sensors, the first group of inertial acceleration sensors being located closer to the tip of the electronic pen, and the other group of inertial acceleration sensors being located at a distance d of at least 30 mm from the first group, sufficient to emphasize the spatial kinetic information of the signature, which captures the kinetic information (ax, ay, bx, by), and an acquisition microcontroller which takes the information from the two groups of sensors and transmits it as it is acquired to a power and communication module, said capacitive touchscreen mobile device comprising means for capturing data sets (x, y, t), where (x, y) represents the absolute graphical coordinates, expressed in pixels, of the pen tip position in contact with the capacitive touchscreen during the signing process, at time t, expressed in milliseconds, wherein the information captured by the electronic pen and the capacitive touchscreen mobile device are then processed, synchronized and stored on said capacitive touchscreen mobile device.
Specification