I am now wondering what you could do to break this. what would happen if you wrote your own incorrect answer in the field. what would happen if you directed it to complete the equasion in a space that was already filled by a different equasion? how can it tell the difference between an I and a 1 without a flick, or a 0 and an o?
i could never use this, i'd be afraid about it silently misreading my handwriting and calculating something other than what i wrote down without me noticing

































