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#1 2020-08-20 18:33:58

Winds
Member
Registered: 2020-01-28
Posts: 53

Defective NFC tags. Penalty is possible?

Hi I would like to tell you about defective nfc tags.

You may didn't know that some times you can buy a party of broken NFC cards and it will be looks great when you'll use:

hf search

command but some of sector will be reads/writes 50% of lucky.

I'll show in my video the metodic how you can easy check your new cards for detect it quality.

Enjoy: https://youtu.be/bvzhcFC6nko

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#2 2020-08-20 18:36:11

Winds
Member
Registered: 2020-01-28
Posts: 53

Re: Defective NFC tags. Penalty is possible?

I need more likes if you wanna know how I did modification of my Proxmark smile

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#3 2020-08-20 22:57:35

mwalker
Moderator
Registered: 2019-05-11
Posts: 318

Re: Defective NFC tags. Penalty is possible?

Winds wrote:

I need more likes if you wanna know how I did modification of my Proxmark smile

Not really in the spirit of the forum. 
I have no issues if people give you "likes" if you provide something of value to them; my issue is in requesting "likes" in the promise of getting a fix, that may or may not come.

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#4 2020-08-20 23:25:18

Winds
Member
Registered: 2020-01-28
Posts: 53

Re: Defective NFC tags. Penalty is possible?

I am sorry, I didn't get what you has wrote.

You can only do check for blocks reading, it's not fixeble.

If more deep usually it's broken a signal amlifer, the card memory is not damaged.
Seems this is the singal overscale effect, when cooficent of ampliffer going less then 0 and revert polarity. Equals the card has didn't understand 10100110 at all. smile

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