../ Access Control Systems.pdf 01-Nov-2022 12:39 390K Bug Detector.pdf 01-Nov-2022 12:39 3M Bugging.pdf 01-Nov-2022 12:39 6M Deciphering Secret Messages.pdf 01-Nov-2022 12:39 477K Electronic Security Systems - Overview.pdf 01-Nov-2022 12:39 616K Experiments in Voice Recognition.pdf 01-Nov-2022 12:39 1M Speech Scrambler.pdf 01-Nov-2022 12:39 645K Vocal Truth Analyzer.pdf 01-Nov-2022 12:39 903K Voice Scramblers.pdf 31-Dec-2023 22:26 2M