I used a proxmark 3 easy (iceman 805269ad4ac363a49ec4725fdd348863455841a7) to clone a keyfob to both a generic gen1a fob and the xMagic. The system uses more than just UID to authenticate. All dumps are identical and while the original key is hardened, the generic gen1a fob works without issue. The issue comes down to the fact that while the xMagic is recognized as a card by the security system, only the generic fob works.
I hate to take up y’alls time, but I am confused as to why the system disallows the xMagic chip while allowing the functionally identical fob.
Probably the most likely scenario is that the reader is just not reading the xMagic at all due to its small antenna. Have you used the high frequency field detector keychain on the reader to determine the best location and orientation to present your xMagic to it with?
In that case I would use the RDC to confirm that the reader is high frequency only. It’s possible that it is a dual frequency reader and what might be causing the beep is the t5577 chip in the xMagic.
If that’s the case then the reader may be picking up the low frequency chip first and then ignoring the high frequency chip, or simply not reading the high frequency chip at all.
You may be right, I will continue testing later, but it is possible that the system uses a dual frequency approach, as while one scanner is permissive with hf, another is restrictive and fails even though the hf is correct.
That is the case, I used a generic t5577 and it had the same beep. I believe the system is dual-freq auth as well, as some scanners do not open to the cloned standalone gen1a, but that may be due to gen1a detection (will try cloned gen2)
As long as you use a dual frequency card (or ring) you won’t get in.
The reader will read the LF much quicker then the HF. Once the LF read and denies, it won’t even look at the HF.
You either need to totally disable the LF on the reader (in software or hardware) or use a HF only tag
Although I agree with this, I have also dealt with dual frequency readers and depending on the antenna layout and separation, it can be possible to isolate the antenna you want.
ie, if the LF is in the centre and HF is the perimiter, if you wanted HF you would approach from the outside perimeter and swipe inward, and if you wanted LF you would present straight to the centre and swipe outward.
Thats been my experience and I have had luck with that.
Your Kilometers may vary