This system basically do a character recognition on EVERYTHING the user is displaying and save the results in a very small file not that well protected.
The data is very small (I guess because it's basically text?), seems easy to find.
That means the history of all you did on your computer (apparently only for the last three feays by default,but well...) can be stolen at once, in a minuscule file.
I'm not an IT specialist, but I don't see in which world this can remotely be a good idea...