| 摘要 |
A security system is provided for use in association with a media entry slot (14, 24) on the user interface (12) of a self service terminal (10), such as a automated teller machine (ATM). At least three profile sensors (60a-60e) are arranged to detect the profile of the leading edge of an object (16) inserted into the slot, (14, 24). An access control means allows objects having a leading edge profile corresponding to a predetermined profile only to access a restricted zone such as the card reader module or a depository. This arrangement reduces the risk of fraudulent access to sensitive parts of the self service terminal via the media entry slots provided on its user interface (12).
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