| 摘要 |
PURPOSE: An anti skimming device is provided to warn card copy danger to a user. CONSTITUTION: A sensing unit(210) senses the change of capacitance due to an access to a target object. A signal acquiring unit(220) gets a sensing signal from the change. A central controller(240) decides whether the target object is a skimming machine based on the obtained sensing signal. The central controller informs the decision result to the user. The signal acquiring unit acquires the sensing signal through envelope detection for the change. |
