Π we got acquainted with RFID tags that invisibly surround us in everyday life. Today we will continue to deal with the domestic use of tags and take a look at tags made in China.
foreword
During did not hesitate to take the opportunity to visit companies that produce RFID tags for a wide range of purposes: from a banal concert ticket to self-destructing tags for marking valuable goods.
For example, I went to the office on the outskirts of Shenzhen.
Assortment of labels, as they say, for every taste and color:
By the way, if you are interested in cooperation with this company, then always ready to help you.
Tags from the Middle Kingdom
In general, I requested samples, among which were both tags with purely Chinese chips, and tags with NXP chips. With the latter, everything is clear, the leader in the RFID chip market and the legislator of "fashion" has reached its clawed paws to China. Let's start with them.
In one label was the world famous old, kind and time-tested (since 2009) MIFARE chip - CUL1V2.
In all its glory from :
Its HD version
But in another label, a funny copy from NXP was found - NT2H1V0B, the documentation for which can be found . Yes, the guys from NXP are still cryptographers, the marking on the chip is somewhat different from what is indicated on the chip.
Big, complex, NXP... Almost 1mm long!
LM (left) and OM (right) images at 50x magnification.
HD picture can be downloaded
And NFC Reader data:
Another destructible tag was loaded with an NT2TTVAO chip also made by NXP, for which, unfortunately, I could not find documentation. Can you help?
Yes, yes, this little appendix of the antenna is the part, the destruction of which kills it and does not allow reading the mark. It will be relevant if you need to trace, for example, whether the goods were opened or not.
LM (left) and OM (right) images at 50x magnification.
HD picture can be downloaded
And, of course, the highlight on the Chinese RFID autopsy cake was a tag with an exclusively Chinese chip.
Since the chip was made in China, googling the documentation did not give any results, although it would be interesting to see what the gloomy Chinese genius put inside this chip. For example, what are the 3 large contact pads in the lower left corner used for: just for testing, or is it a clever tamper alarm?
LM (left) and OM (right) images at 50x magnification.
HD picture can be downloaded
And finally, scanty data from the NFC Reader about this label and chip:
Instead of a conclusion
In two parts, we looked at RFID tags that are used in everyday life, logistics, and when transporting goods. As you can see, the widespread use and the corresponding price reduction per one relatively simple chip made it possible to start introducing RFID where even 5 years ago it seemed economically unattractive. Following this expansion, the widespread introduction of automation began - I am sure, for example, that my glasses are in a box with RFID marking they came from a semi-automatic or even automatic warehouse. In this cycle of supply and demand for virtually disposable tags, βnon-traditionalβ manufacturers have also appeared, such as the mysterious Chinese Noname, which makes its own MIFARE chips.
I think that in the next part we will touch on the topic of secure chips and how to look under the metallization layer.
Don't forget to subscribe to : It's not difficult for you - I'm pleased!
And yes, about the shortcomings noticed in the text, please write to the LAN.
Source: habr.com