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US 10,592,904 B2Granted
Card shimmer detection
AssigneeNCR Corporation
InventorWeston Lee Hecker
Life of this patent
Estimating the term…
Abstract
A shim detection device is selectively interfaced to a portion of a chip card reader that is integrated into a terminal. The shim detection device is configured to detect when a shimmer is inserted into the chip card reader during a card transaction at the terminal and take an automated action in response thereto.
Claims19
A system, comprising:
- a chip card reader;
- and
- a shim detection device interfaced to at least a portion of the chip card reader and configured to detect when a shimmer is inserted in the chip card reader during a card transaction at a terminal;
- wherein the shim detection device is adapted and configured to:
- be inserted into the chip card reader and between the chip card reader and any potential shimmer device that may be inserted into the chip card reader;
- include no software executing on the shim detection device;
- include a component that is configured to be fully powered on by a battery of the shim detection device when deviations in voltage pass through a series of successive filtering gates from the battery and reach the component, and wherein the component when fully powered on is adapted to generate a power on alert that is detected by a microcontroller of a terminal having the chip card reader, the power on alert providing an indication to the terminal that a shimmer was inserted into the chip card reader.
4 more elements
A method, comprising:
- monitoring, by a shim detection device, fluctuations in voltage and ground from a power lead and a ground lead of a chip card reader, wherein the ship detection device is a hardware device and does not execute any software;
- activating, by the shim detection device, successive gates based on a degree of change associated with a particular fluctuation;
- and
- providing, by the shim detection device power to power on a device when the particular fluctuation activates a last of the series of gates by supplying power from a battery of the shim detection device to a component of the shim detection device and the device interfaced to the component for power.
1 more element
A method, comprising:
- obtaining, by a shim detection device, readings from selective contact leads on a chip card reader, wherein the shim detection device inserted into the chip card reader and is a hardware device that does not execute any software;
- filtering, by gates of the shim detection device, known and preconfigured noise variations in each of the readings;
- and
- powering on a device by a component of the shim detection device when the component receives power from a battery of the shim detection device after passing through all of the gates and the component supplying power to the device as an indication that a shimmer was inserted into the card reader casing a particular reading to exceed each of the known and preconfigured.
1 more element
Dependencies are inferred from the claim text.