I should say first up that the title above may, may not be, the answer to this issue.

So heres the problem Do you remenber when we were kids and some people , not me no sir!, use to keep their Playboy etc under the mattress? . And we made a pact with our best mate that whoever died first the survivor, would go into the others house and remove the evidence before it embarrassed a loved one combing through your belongings for anything that might fetch a few bob!. Or was that just me and my mates?

Anyway

The point is I was thinking I may..... or may not have stuff on my hard drives that I wouldn't want some people to see. You know the sort of thing a letter you wrote to your daughter telling her what a s*** her brother was etc or vice versa.(Hey son? I never did say that!) 

So what scenario can you conjour up where all information you have on a hard drive gets destroyed on your demise.

Bearing in mind it needs to be automatic. I imagine something I need to reset everyday or it starts a terminate process.

Anyway I  am open to all and any suggestions .. LOL something different to think about...