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use digital #6
Accuracy: Worst case 1 meter/s
Keep your Raspberry Pi Model A+ computer safe and sound in this lovely clear acrylic enclosure
but you don't know how it works beneath the surface
but its larger and more expensive
Adafruit PN532 NFC/RFID Controller Breakout Board for Arduino + Extras USB Cables use digital #6The 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.