A radio transmission technology that attempts to avoid interference and block snooping by varying the frequency used by the transmission. It was co-invented by actress Hedy Lamarr.
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Spread spectrum in general was originally used by the military. For today's wireless communications in an unlicensed radio frequency band, FCC regulations require the use of a spread spectrum technology. The choice is direct sequence spread spectrum (used by 802.11b systems) or frequency hopping spread spectrum (used by HomeRF and Bluetooth).
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