Tawagar masu bincike daga Jami'ar Kasa ta Singapore da Jami'ar Yonsei (Koriya) sun kirkiro wata hanya ta gano boye makirufo a kwamfutar tafi-da-gidanka. Don nuna aikin hanyar, an haɗa wani samfuri mai suna TickTock akan allon Raspberry Pi 4, amplifier da mai ɗaukar shirye-shirye (SDR), wanda ke ba ku damar gano kunna makirufo ta qeta ko kayan leken asiri don sauraron mai amfani. Dabarar gano ko an kunna makirufo tana da dacewa saboda idan a yanayin kyamarar gidan yanar gizo mai amfani zai iya toshe rikodin ta hanyar rufe kamara kawai, to kashe makirifon da aka gina yana da matsala kuma ba a bayyana lokacin da ya ke ba. yana aiki kuma lokacin da babu.
Hanyar ta dogara ne akan gaskiyar cewa lokacin da makirufo ke aiki, da'irori masu watsa siginar agogo zuwa na'ura mai canzawa zuwa dijital suna fara fitar da takamaiman siginar bango wanda za'a iya ganowa da kuma rabuwa da hayaniya da ke haifar da aikin wasu tsarin. Dangane da kasancewar takamaiman marufofi na electromagnetic radiation, mutum zai iya yanke cewa ana yin rikodi.
Na'urar tana buƙatar daidaitawa don nau'ikan littattafan rubutu daban-daban, tunda yanayin siginar da aka fitar ya dogara sosai akan guntun sautin da ake amfani da shi. Don ƙayyade aikin makirufo daidai, ya zama dole don magance matsalar tace amo daga sauran hanyoyin lantarki da la'akari da canjin sigina dangane da haɗin.
A sakamakon haka, masu binciken sun sami damar daidaita na'urar su don gano amintacce ko an kunna makirufo 27 cikin 30 na gwajin kwamfyutocin da Lenovo, Fujitsu, Toshiba, Samsung, HP, Asus da Dell suka yi. Na'urorin guda uku waɗanda hanyar ba ta aiki akan su sune samfuran Apple MacBook 2014, 2017 da 2019 (an ɗauka cewa ba a iya gano siginar siginar ba saboda yanayin garkuwar aluminum da kuma amfani da gajerun igiyoyi masu sassauƙa).
Masu binciken sun kuma yi ƙoƙarin daidaita hanyar don wasu nau'ikan na'urori, kamar wayoyin hannu, allunan, masu magana da kyamarorin USB, amma ingancin ya yi ƙasa sosai - daga cikin na'urori 40 da aka gwada, an gano ganowa akan 21 kawai, wanda aka bayyana ta hanyar. amfani da microphones na analog maimakon dijital, sauran hanyoyin haɗin da'irori da gajerun madugu suna fitar da siginar lantarki.
source: budenet.ru