![]() ![]() It seems that HID must use the T55X7 type card to copy, and T55X7 is also called TK4100 (EM4100) card. In fact, the author has completely ignored a problem. As mentioned in the article, you can buy related blank cards for Copy operation. The low frequency cards based on 125kHz frequency, such as the HID we know, are all solidified in the ID part (or read-only as mentioned in this article), but this is not exactly the case. In fact, almost 100% of the large-scale environment (including the school mentioned in the article) can not be completely matched with the back-end, or simple It ’s just an interaction with the card reader! Not to mention the database. The simplest part mentioned in the article is that its identification is matched through the back-end database.
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