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#1 2018-02-10 21:45:08

maxben14
Contributor
Registered: 2017-06-17
Posts: 10

What speeds 1k tag can transmit data to PCD ?

I have in my the city turnstiles transport systems, which read the cards of the mifare classic 1k type nfc-a, how do I determine at what speed from the datasheet they expect the data from the map?
I think Manchester coding use but according datasheet this cards can transmit data on NRZ-L. How me know on Manchester or NRZ-L use PCD in my transport systems ?

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#2 2018-02-11 11:56:59

piwi
Moderator
Registered: 2013-06-04
Posts: 526

Re: What speeds 1k tag can transmit data to PCD ?

You need to sort several things out and rephrase your questions because:

  • There is no Mifare Classic NFC type

  • There is only one speed in the Mifare Classic Datasheet

  • Mifare Classic uses Modified Miller coding from PCD to PICC and Manchester coding from PICC to PCD.

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#3 2018-02-13 18:24:45

maxben14
Contributor
Registered: 2017-06-17
Posts: 10

Re: What speeds 1k tag can transmit data to PCD ?

@piwi, i try my device-emulator 1k in transport system. My device do AUTH operation about 500 mks, but turnstile send me HALT. Why ? I read datasheet about mifare classic and in datasheet 1 ms is max AUTH operation.

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#4 2018-02-14 07:58:34

piwi
Moderator
Registered: 2013-06-04
Posts: 526

Re: What speeds 1k tag can transmit data to PCD ?

There might be an error in your device-emulator, or you may have the wrong key.

May I remind you that this is a Proxmark forum,  not a "my device-emulator" forum. How can you expect help for something which only you have and know?

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#5 2018-02-14 18:21:16

maxben14
Contributor
Registered: 2017-06-17
Posts: 10

Re: What speeds 1k tag can transmit data to PCD ?

piwi wrote:

There might be an error in your device-emulator?

What is error ? My device correctly read and write your proxmark3.
Key is correct, i checked the log that I'm sending At the right turnstile.
But i have problem and with proxmark3 on turnstile too after correct AUTH proxmark get HALT.

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#6 2018-02-14 18:24:11

maxben14
Contributor
Registered: 2017-06-17
Posts: 10

Re: What speeds 1k tag can transmit data to PCD ?

My basic question what about timing on transport system do on comand AUTH ? How fast need answer on reader request with nr,ar. I answer about 500mks after get nr,ar.

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