The iPhone app that can tell if you're depressed - just by tracking your typing

Some 5.7 million US adults suffer from bipolar disorder, however, the only way to treat them during an episode is to watch for signs – but sometimes it is too late.
Now, researchers have developed an iPhone app that uses Apple’s ResearchKit, allowing the technology to track and predict the user's mood and episodes by analyzing their keystrokes.
Called BiAffect, the technology screens typing speed, how hard keys are pressed and the frequency of the use of backspace and spellcheck, all of which can reveal if the person is experiencing depression or mania.

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