Cloning a Mifare 13.56 MHz Proximity Card for Apartment Access with Family of 4

I live in a block of flats with a family of 4, to enter the apartment I have to put a proximity card to the door, the problem is that I got two cards and I need four, I went to the administration to make me two cards, and they said they can't do it because Up to 2 cards can be assigned to each apartment.

Is there no "home" way to clone a proximity card, I saw an auction on Allegro where they sell blank cards - the standard of the card is mifare 13.56 mHz ??

Probably not to clone. Unless some ancient system. Blank cards can be read into the system. And since when does the administrator decide how many people can live in an apartment?? Maybe it's some cheap system with a small capacity, e.g. 100 cards.

Standard is from 5 years ago.
If I clone the card, it will have the same data as the first one, so the capacity of the system has nothing to do with it, if I'm wrong, write.

Access control systems were created in order not to copy keys. It can be done with mechanical. Electronic keys are there to control the keys.

kamilalek1 wrote:

If I clone the card, it will have the same data as the first one, so the capacity of the system has nothing to do with it, if I'm wrong, write.

Cards cannot be cloned. Each card, even a blank card, has its own number and it is loaded into the system.

Recently, in the news, they said that it is possible to clone a contactless - credit card, all you have to do is hug someone like that on the bus and you have their card details, so there should be no problem with the housing card if you can clone a credit card.
Here's the video http://www.youtube.com/watch?v=ZKpEY4lRz9A&feature=player_embedded

THESE CARDS CAN BE CLONED. At one time, there was even a project of a cloner card on the forum, which could pretend to be a previously read card. I am personally trying to do a similar topic (rfid unique 125khz) for research purposes, but just like the author of the mentioned project, I will not share the details, in particular the possible programs, because you never know who might find it useful.
As for your problem, the solution is the law: the administration has no right to limit the number of keys in this case in electronic form. Go to them again and if they refuse, write a written request and then possibly a complaint with a request to change the system to another one, allowing you to use as many "keys" as you wish

I sent them a written request but they did not accept it, tomorrow when I find it you will send a scan.
I saw several proximity card readers on the Internet, but the prices of PLN 800 are too high, I also read on the card security website that such a reader can be purchased for $ 50, but I can't find it anywhere.

Or maybe make a card emulator? It is true that it is so inconvenient that it requires power, but it can be survived. I saw on a foreign website a project that probably consisted only of a microcontroller, a coil and a few passive elements. It would be possible to stuff it with the battery into some housing from the car remote control. Probably a simpler solution than cloning the card.

Hello,

impersonation of the Unique system card (125 kHz) is no secret, the system itself is old and nobody (normal) uses it in serious security.
With Mifare system cards (13.56 MHz) it is different, the transmission itself is encrypted and the card, apart from a unique serial number, contains memory banks in which any data can be stored.

A card cannot be cloned to a regular other card, because the new "blank" cards already have a different one unique read-only serial number.
You would need a card with the ability to assign it yourself a serial number.

Another problem with impersonating Mifare system cards is the fact that the transmission is encrypted.
There have already been successful attempts to break this security, but this is far from the reach of an ordinary bread eater who wants to make a second electronic key.

So for your problem, you can assume that cards cannot be cloned.
The only option in this case is to pester the administration for issuing additional cards and assigning them to your premises.

Regards,
GSM

A legal problem and it must be resolved legally. You just have to be consistent. It is worth turning to lawyers, because such behavior of an official assuming electronic cutting even smacks of violating the Constitution.

wzk wrote:

A legal problem and it must be resolved legally. You just have to be consistent.

And that's the right way. Start with a letter to the property manager (letter by registered letter or delivered in person with return receipt on copy). Don't do anything "by the mouth".

gruby1 wrote:

Or maybe make a card emulator? It is true that it is so inconvenient that it requires power, but it can be survived. I saw on a foreign website a project that probably consisted only of a microcontroller, a coil and a few passive elements. It would be possible to stuff it with the battery into some housing from the car remote control. Probably a simpler solution than cloning the card.

Emulator or card cloner -> it comes out the same and by the way, this solution with a coil and attiny85 does not work very well because I tested
Well, it's actually not that simple with mifire cards Therefore, as I say - go to a lawyer with this, because such conduct of the cooperative is against the law.

I have an RFID programmer in the UNIQUE 125kHz standard.

The programmer itself is the size of a pack of cigarettes, powered by 2xAAA, transponder reading 1sec, writing about 3sec.

I tried copying cards and key chains, works great
Writable cards are rewritable.

BTW: maybe someone knows how the new code is maintained in the transponder? Is it some kind of flash memory?

kamilalek1 wrote:

and they said that they can't do it because a maximum of 2 cards can be assigned to the apartment.

Most often, if you pay for 2 people, you get 2 cards. So the legal route is rather out.
But for some time now I have a toilet for a UNIQUE proximity card at work. Deposit PLN 50. Without any problems, the card could be copied to the transponder from the car for PLN 10. so I have 40 left for a drink.

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