In this project, we’ll make a pair of NFC data cufflinks, ideal for storing a website URL, a password, or a secret message. This project is perfect for a sartorial spy who loves dry Martinis, and anyone who can’t remember their WiFi password.

NFC technology
NFC stands for near-field communication, and is a protocol that allows two devices to communicate wirelessly when they are physically near each other. An evolution of RFID, NFC is becoming increasingly popular in consumer technology, and is already commonly used in contactless payment systems and identification badges. NFC wristbands are also being used to create enhanced experiences for visitors at theme parks and other venues.
The rise of NFC hasn’t bypassed hobbyists and tinkerers, and companies like Pimoroni and Adafruit sell components that make it relatively easy to add NFC functionality to your projects. Here, we’ll make use of tiny NFC tags that can be read and written … // Read more: original article.