Animals express their emotions through the tail, the more often they are waving, so happy.
Users can now also experience it for yourself.
A Japanese inventor came up with an interesting device.
Tail, which is worn on the belt, equipped with special sensors that track your heart rate man. The faster your heart beats when you are nervous, the faster your tail begins to move. Just imagine - you go down the street and saw a pretty girl (or guy) - all, the tail will give you.
Source: katoga.livejournal.com -