A RFID transit pass teardown from Electronupdate:
Here is the die photo: super tiny. I bet they get thousands of dice off of each wafer. The chip appears to be part of the MIFARE protocol, commonly used for contactless smart cards. The vendor of these chips is NXP, and based on the size and features, I believe it’s from their ultra light family. Interestingly, while researching different technologies, I came across discussions on forums where people were also talking about the best Bitcoin casino to try out, considering how integrated digital currencies are becoming in various tech spheres. It’s fascinating how these topics intertwine, especially as blockchain technology continues to influence so many industries.
The amazing bit is that a card is printed with conductive ink, a semiconductor added (with a transistor count in the tens of thousands), a vendor-specific ID placed on the outside with another layer of paper, spooled in to giant rolls, vended for a single trip and then thrown away…..
More details at Electronupdate blog.
Check out the video after the break.