This sounds promising -- would love to see this become more practical.

With wearable devices becoming more common - I am anticipating a wave of "sensors" that can be as simple as small band-aid patches that wirelessly send data to your smart device. Those sensors could also open up human-coputer-interface innovations like these.

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In similar space ...

There was a post about a thought-to-text project from MIT no less --

"AlterEgo"

10 months ago: https://news.ycombinator.com/item?id=45174125 8 years ago: https://news.ycombinator.com/item?id=16780357

When I saw the demo posted last year it left me with an uneasy feeling -- gut feel said it was more marketing than a real working technology demo. Nothing seems to have come out of that lab since then -- strengthemning my suspicions.