New York artist Anthony Antonellis recently had a "body modification specialist" cut open the skin between his thumb and index finger, and insert a RFID chip.
The chip is the size of a grain of sand, is encased in a glass capsule and includes a tiny antenna. The RFID stores 1KB of data that is readable by cell phones.
When a compatible smartphone is held two centimeters, or less, from his hand, a GIF of a pixelated rainbow shows up on the cell phone's screen.
Antonellis says the RFID chop can be loaded with other pieces of electronic art.
"I Eternal Sunshine'd that entire hour of my life. I think of it as a changeable, digital net art tattoo vs. fixed information," Antonellis told AnimalNewYork.com, which recorded the implantation (video below).