The Keen bracelet (from US$149), from startup HabitAware, grew out of founder Aneela Idnani Kumar’s two-decade struggle with trichotillomania, a disorder where sufferers distractedly pull out their own eyebrows and lashes.
You, she reminds, are who’s really in control. And that’s where Keen comes in. When the bracelet vibrates, it’s bringing the picking compulsion from the subconscious into the conscious — giving you the ability to then consciously say to yourself “my hands are not where I want them to be”.
It's important that Keen fits snugly. Here's a quick guide to help you decide which bracelet size to order: