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Phones have found a unique electronic "fingerprint"
Frequent change of SIM-cards and unique IMEI-ID mobile phone helps the attacker to be in the shadows, hiding from surveillance. But scientists from Germany, it seems, has got to find method of how to deal with it. They learned that each device has a unique characteristic "digital fingerprint", which can go to the cyber criminals.
Jakob Hasse and colleagues at the technical University of Dresden report that the special "footprint" that leaves each phone, depending on the quality of the electronic components inside it. In the filling of each device included electronics, such as amplifiers, oscillators and mixers which make interference in the final signal. One of these indicators, emphasizes Hasse, may vary from 0.1 to 20%.
After conversion of analog signals to digital, when the antenna receives the signal, these "footprints" are becoming unique for each device, even if it goes about the same models. Having tried the technology in the laboratory on 13 machines, the experts were able to identify the source with accuracy up to 97.5%.
Source: /users/413
Jakob Hasse and colleagues at the technical University of Dresden report that the special "footprint" that leaves each phone, depending on the quality of the electronic components inside it. In the filling of each device included electronics, such as amplifiers, oscillators and mixers which make interference in the final signal. One of these indicators, emphasizes Hasse, may vary from 0.1 to 20%.
After conversion of analog signals to digital, when the antenna receives the signal, these "footprints" are becoming unique for each device, even if it goes about the same models. Having tried the technology in the laboratory on 13 machines, the experts were able to identify the source with accuracy up to 97.5%.
Source: /users/413
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