I thought the main appeal was the ability to do so many tests, so cheaply, and so quickly -- and that doing it via finger prick was key. It&#x27;s actually a brilliant concept for a business, the kind of thing that seems like other established players would just ignore since blood testing is already so profitable. But as I understand it, there was a high scientific bar to clear (less blood is, well, less blood to get a stable reading on -- and apparently blood from the fingertip has extra impurities compared to blood drawn from a vein)