| 31. | A related contactless technology is RFID ( radio frequency identification ).
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| 32. | Wal-Mart is also driving manufacturers to invest in radio frequency identification.
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| 33. | The station operates on the AM radio frequency of 1310 kHz.
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| 34. | It consists of radio frequency identification unit incorporated into the present container seals.
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| 35. | The animals wear ear tags that carry radio frequency identification devices.
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| 36. | Smiths Interconnect is a manufacturer of electronic and radio frequency components.
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| 37. | The flare caused static on radio frequency used to navigate boats and planes.
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| 38. | That's why the groups want the radio frequencies set aside for unlicensed services.
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| 39. | And equipment that makes no use of radio frequencies can also cause interference.
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| 40. | Both devices are wireless and use radio frequencies rather than the typical infrared.
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