Shippo (Japan, Neurowear, 2000s)
At one time in our lives (until 3 to 4 weeks of our embryonic development), humans have tails. After 4 weeks, the tail develops no further. The Japanese, specifically a company called Neurowear, have decided to change that with the Shippo (Japanese for tail). The fuzzy tail even goes so far as to tell the world your mood. An EEG headset and a clip-on heart monitor are wired to the tail. Shippo also features geotagging and a smart phone sharing capability so fellow Shippo wearers can find each other on the street.