I have an NFC Keyfob thats used to open doors. Out of curiosity I tried to read it but my smartphone (NFC Tools App) showed me read failed. That seemed obvious since I was sure that it is encrypted by some means. However a friend of mine has a flipper Zero and has no problem in copying the keyfob. So how does that work? How does the flipper do that. (And as a secondary question: what should I look into to make a cloning device with an arduino and an rc522 chip?)
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from hacking: security in practice https://ift.tt/D14zlry
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