New Device Promises to Break Bad Habits

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Aneela Idnani Kumar says the genesis for Keen—a Fitbit-shaped device that aims to stop nervous habits like nail-biting and skin-picking—came when her husband, Sameer, confronted her about her disappearing eyebrows. For more than two decades, Aneela had been suffering from trichotillomania, a disorder more commonly known as hair pulling.