If my German is not good enough, I encourage everyone to simply google Weblookon or Seclookon, filter out all press releases from the vendor and see what is left.

> Oh yes, the pictures are the problem for Amazon, Youtube, Facebook, Windows and so on.

You are comparing apples and oranges. Of course there is content in the world that is not available for people with disabilities. But Weblookon is not excluding people from content they could never use, it excludes them from the login to written content they could use. The login of none of the pages you named depends on pictures.

>> less secure (because of the needed clear-text storage of secrets)
> I read that nonsense (...). That shows you've no clue how it works.

Then explain it to me. How on earth can your system compile the pictures and check the results without knowing the secret?

> > and less available (DoS) than other knowledge-based systems.
> And that's nonsense too.

From what I remember your system has to compile the pictures (based on the key), keep a channel during the complete process and remember the numbers wanted/used. That sound's like a lot more effort then checking a password.

> Oh in fact? I need the secret Key-ID, the pictures, the symbols, the relation between pictures and the input character, all the information (input AND output) and more than one login.

Modern malware, screengrabbers and keyloggers are no rocket science. If your system gets some attention, someone will soon evaluate, how many logins you have to observe to derive the key.

>> Oh, and I'm very sorry, but the system has got no steganography in it.
> Oh, you should better understanding things before you post something.

OK, where do you HIDE a message? The involvement of pictures doesn't turn a system into steganography.

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