@John H, You really have no idea what you are talking about.
For one thing, once information is overwritten that information will and cannot be recovered. Why? Because if what you are saying is true then encryption for information would be a complete failure because the entered password for the encryption could be recovered before the time of encryption. So what you are saying makes no sense.
Scrambled data is Scrambled data, if over written properly “IT’S SCRAMBLED” and even if it is recovered “IT’S USELESS”.
I am not sure what your purpose is for posting that BS information you just did, but advising people to destroy their hardware as a means to ensure their private data can’t be recovered is wrong. You must be a democrat, perhaps you worked for Hillary? Have you had to destroy any emails lately? Rip apart a few cell phones or something like that?
That’s completely unnecessary if you simply encrypt your information properly and make sure once it’s overwritten to delete that it is replaced with an uncrackable encryption format.
As for what this software does, I have no idea as I have not tried it. But I felt I should point out and mention a few things for those who might be interested in knowing.