Adafruit PN532 NFC/RFID controller breakout board (v1.6) Brand_Leatherman you can use a lower

you can use a lower license-free frequency such as 433 or 900 MHz

While the controller has many capabilities

​Datasheets LM48310 - 2

You may get the new PCB or the older version with vector fonts

Adafruit PN532 NFC/RFID controller breakout board (v1.6) Brand_Leatherman you can use a lowerThe PN532 is the most popular NFC chip, and is what is embedded in pretty much every phone or device that does NFC. It can pretty much do it all, such as read and write to tags and cards, communicate with phones (say for payment processing), and 'act' like a NFC tag. If you want to do any sort of embedded NFC work, this is the chip you'll want to use! NFC (Near Field Communications) is a way for two devices very close to each other to communicate.