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TRANSACTION DATA ENTRY RECORDED ON VIDEO SYSTEM COMPRISES SYNCHRONISATION SIGNALS ADDED TO VIDEO RECORDING AND TO ASYNCHRONOUSLY RECORDED TRANSACTION DATA PERMIT MATCHING OF DATA AND ENTRY EVENTS UPON PLAYBACK
TRANSACTION DATA ENTRY RECORDED ON VIDEO SYSTEM COMPRISES SYNCHRONISATION SIGNALS ADDED TO VIDEO RECORDING AND TO ASYNCHRONOUSLY RECORDED TRANSACTION DATA PERMIT MATCHING OF DATA AND ENTRY EVENTS UPON PLAYBACK