A wearable tail for humans wags when heart rate increases. You can get a sense of a cat's emotions through her body language.What if you had one of those mechanisms available to you?Check out a wearable wagging tail concept that's up on kickstarter.Dubbed ‘Tailly’, it reacts with the wearer’s heart rate, wagging rapidly when the owner is excited and it simply hangs down when the human has a normal heartbeat.
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