At this year’s Tokyo Games Show, Japanese purveyor of electronically-augmented fashion Neurowear unveiled the successor to its Necomimi brain-activated cat ears. It’s called Shippo, and it’s a brain-controlled motorized tail that responds to the user’s current emotional state with corresponding wagging.

Shippo requires a NeuroSky electroencephalograph (EEG) headset, alongside a clip-on heart monitor, in order to observe brain activity and pick up on the user’s emotional state. This information is then translated to wagging, which will be soft and slow or hard and fast, depending on whether one is relaxing or excited/anxious. The EEG headset communicates with the fluffy appendage via a Bluetooth connection.