Protection device, corresponding method and computer software product

摘要

A device is provided for protecting an electronic payment terminal, which includes at least one printed circuit and one casing. The device includes at least one capacitive detector having a first part electrically connected to the printed circuit and a second part mounted within the casing of the electronic payment terminal without being electrically connected to the first part. The at least one capacitive detector is configured to deliver a reference capacitance when it is mounted in the electronic payment terminal. The device also includes a capacitive measurement microprocessor electrically connected to the at least one capacitive detector and configured to detect a variation in capacitance of the at least one capacitive detector. The device includes a transmitter for transmitting a piece of information representing the variation in capacitance when an absolute value of a difference between the measured capacitance and the reference capacitance exceeds a predetermined threshold.

主权项

1. A device for protecting an electronic payment terminal, said electronic payment terminal comprising at least one printed circuit and one casing, wherein said device for protecting comprises:
at least one capacitive detector comprising a first part electrically connected to said printed circuit, a second part mounted within said casing of said electronic payment terminal without being electrically connected to said first part, and a third part comprising at least one polyhedral element lined with a conductive surface, said at least one capacitive detector being configured to deliver a reference capacitance when said at least one capacitive detector is mounted in said electronic payment terminal, wherein said at least one polyhedral element has at least one of a shape, thickness or location that is unique for said device, and wherein the second part changes at least one of shape or location relative to the first part when the terminal is dismantled leading to a variation in a measured capacitance; a capacitive measurement microprocessor electrically connected to said at least one capacitive detector, configured to detect a variation in capacitance of said at least one capacitive detector; a transmitter for transmitting a piece of information representing said variation in capacitance when an absolute value of a difference between said measured capacitance and said reference capacitance exceeds a predetermined threshold.