Surprisingly someone has 1up’ed the Nostril LED! This creepy ring is designed to express the user’s emotion by blinking; triggered by sound, touch and computer commands.
The ring, designed by researchers at Keio University in Japan, is intended to enhance interaction and communication of humans, although we don’t exactly know how. In the tiny package is a Arduino processor and a Bluetooth module, allowing it to communicate with almost any device.
Source: Trend Hunter