So, after reading the replies I guess my initial plan and my little application is working as expected!

I participate with this Application at the Coding Competition in the FUN & STRANGE section. And as far as I'm able to check some people here have already fun. So it works!

For me it's a small learning project to get more familar with graphical objects. (have a look at the matrix stile numbers effect - it's real time calculated and every time different)
I've a Idea for a, in my opinion, good small Game that could work great at the N900, it's successor and some Tablet computer. I know, nobody in THIS thread will belive me now, but it will simulate a Multitouch screen. Yes, you read correctly. You will play this game the most time with 2 fingers on your screen. (not more, not less) This game will feel at the N900 as if it has a multitouch screen.
Okay, I can see it on your face (thru the light sensitive layer on your screen) you don't belive me. So please stay tuned. I hope I could release something in the next months. (but I guess unfortunately only after the end of the coding competition - I have still a lot to learn and not enought time and vacation)

So, go out with your mobile X-ray unit and have some fun!

In my opinion it works a lot better than the "similar" and expensive applications for the fruit phone from Apple. I my opinion my application has in contrast a chance that someone could belive it for more than 5 seconds... Am I wrong?

In the very unlikely case you could like my work, please test the donate button in my little application. It could never get a compensation for all the hours I spent learning C++ and Qt... but it will be in my opinion the best feedback and the best motivation I could get.

It's only a detector, not a radiator. So you should be safe.
And I have seen your fart app tutorial from last years coding competition. So, select your words wise...