Automated banking machine that outputs interference signals to jam reading ability of unauthorized card reader devices
View Patent ↗A banking system is controlled responsive to data read from data bearing records. The system comprises an automated banking machine. The machine includes at least one type of data reader, which includes a card reader. The machine also includes an anti-fraud arrangement that can deter effective operation of unauthorized devices attached to the machine. Such unauthorized devices may include a fraudulent card reader placed adjacent to a card entry slot that leads to the card reader. The arrangement can sense a fraudulent card reader installed on the machine. The arrangement can additionally emit jamming signals that interfere with an ability of a sensed fraudulent card reader to accurately read card data.
1. A method comprising:
determining a speed of a card being read by a card reader, the card reader having a slot;
operating a processor to determine at least one jamming pattern that includes a jamming signal at a frequency that matches the determined speed of the card being read by the card reader; a
operating the processor to cause an emitter to output jamming signals that correspond to the at least one jamming pattern;
determining a change in the speed of the card being read by the card reader; and
varying the frequency to correspond to the determined change in the speed of the card being read by the card reader;
wherein the jamming signals are configured to prevent accurate reading of card data by at least one read head of a fraudulent card reader located adjacent to the slot.
2. The method according to claim 1 , wherein the jamming signals include false card data that is configured to appear as valid card data to the fraudulent card reader.
3. The method according to claim 1 , wherein the jamming signals include characters corresponding to card reader instructions to one of a group consisting of start reading and to stop reading.
4. The method according to claim 1 , wherein at least one of the jamming signals randomly hops frequencies.
5. An apparatus, comprising:
a card reader having a card entry slot; and
a jammer arrangement;
wherein the jammer arrangement comprises a processor, a sensor operable to determine a speed of a card being moved within the card reader, and an emitter;
wherein the processor is operable to operate the emitter to emit a jamming signal that has a frequency that matches the determined speed of the card being moved within the card reader.
6. The apparatus set forth in claim 5 ,
wherein the processor is operable to determine a change in speed of the card being moved within the card reader; and
wherein the processor is operable to vary the frequency of the jamming signal to according to the change in speed of the card being moved within the card reader.
7. The apparatus set forth in claim 6 , wherein the emitter is operable to emit a jamming signal that is directional magnetic field towards the card reader's card entry slot.
8. The apparatus set forth in claim 5 , wherein the jamming signal is at a frequency that matches one of a group consisting of an insertion speed and removal speed of the card.
9. The apparatus set forth in claim 5 , wherein the emitter to outputs a plurality of jamming signals.
10. The apparatus set forth in claim 5 , wherein the sensor includes a contact roller sensor;
wherein the processor is in operative connection with the contact roller sensor; and
wherein the speed of the card is determined based at least in part on at least one sensing by the contact rover sensor.
11. The apparatus set forth in claim 10 wherein the sensor includes a complementary metal oxide semiconductor (“CMOS”) sensor, and
wherein the speed of the card is determined based at least in part on sensing by the CMOS sensor.
12. The apparatus set forth in claim 5 , wherein the emitter outputs a plurality of jamming signals at frequencies that are harmonically related to the speed of the card.
13. The apparatus set forth in claim 5 , wherein the emitter to outputs a plurality of jamming signals that comprises random frequencies.
14. The apparatus set forth in claim 5 , wherein the emitter to outputs a plurality of jamming signals that include false card data configured to appear as valid card data to the fraudulent card reader.
15. The apparatus set forth in claim 5 , wherein the emitter to outputs a plurality of jamming signals that include characters corresponding to card reader instructions to one of a group consisting of start reading and to stop reading.
16. The apparatus set forth in claim 5 , further comprising a resonant antenna to emit the jamming signals coupled with the emitter.
17. The apparatus set forth in claim 5 , wherein the emitter outputs a plurality of jamming signals that are interleaved.
18. The apparatus set forth in claim 5 , wherein the processor is operate to insert one of a group consisting of two errors per five bit word and two errors per six bit word into the jamming signal.
19. The apparatus set forth in claim 14 , further comprising an automated banking machine coupled with the card reader and the jammer arrangement, the automated banking machine comprises a cash dispenser;
wherein the automated banking machine is associated with a computer that is operable, responsive at least in part to a determination that user data read by the card reader corresponds to a financial account usable to authorize a cash dispense transaction with the automated banking machine, to cause the cash dispenser to dispense cash, wherein the computer is further operable to cause the financial account to be assessed a value associated with an amount of cash dispensed.
20. A tangible, non-transitory computer readable medium of instructions with instructions encoded thereon for execution by a processor that when executed by a processor are operable to:
determine a speed of a card moving within a card reader;
determine at least one jamming pattern for usage, wherein the pattern includes at least one frequency that matches the determined speed of the card;
cause a signal emitter to output jamming signals that correspond to the at least one jamming pattern;
determine a change in the speed of the card moving within the card reader; and
vary a frequency of the jamming pattern to correspond to the change in the speed;
wherein the jamming signals are configured to prevent accurate reading of card data by at least one read head of a fraudulent card reader located adjacent to the slot.