The NFC / RFID chip is the size of a grand of sand. It’s equipped with a tiny antenna and encased inside a glass capsule to keep it from being disrupted by its fleshy environment. This chip stores 1KB of data and is readable like a key fob by compatible phones, tablets, card readers and the Arduino microcontroller.
“It’s usually used for privacy, but I use it for a public purpose, which is to distribute artwork,” the artist explains. He hovers his Android 1-2cm above the clotted cut, and up pops his favicon, a signature Antonellis gradient gif.
Video and more here.