| After wide issue of crypto steady SIM, cloning as business gradually died out. But Russian specialists could duplicate and they had started up to life this new technology of reading of SIM with Comp 2. Thus, European and American engineers, numerous froad-managers, and other specialists somehow overlook simple fact: above all, SIM-card is an electrical microchip, which needs some electrical energy for its work. Moreover such energy consumption changes depend on working of specific areas of chips SIM card. At first time, we were interested in the area of SIM, which responsible for Key Identification (KI). Yes, these electric changes are very little, imperceptible, they could be measured in parts of microamperes, but tracing is nevertheless possible. Furthermore, it is possible to trace the small electromagnetic waves (radiation) from microchip, because any electrical device radiates waves ? more or small. The clock frequency of processor of SIM cannot be stable on various modes of work. In case with SIM, some changes have observed on 10-20 KHz during accepting of some pair of KI. Using this method, we were succeed in access to ?the holy of holies? of SIM: PIN1,PIN2, PUK1, PUK2. The first model of the device for reading SIM v2 was assembled enough complex, large, bulky, it was seemed like a vacuum tube radio receiver. Some time later, we have done a big lot of work in this sphere. |