Isn’t it possible to add characters by “writing” them on the tablet?
It would be a nice search tool for unknown characters and easier for translations.
Skitter is running so why start another library search or “search by radical”?
All the hard- and software tools are already there.

What do you mean that the tools are already there? Skritter decides on a character to test and knows in advance what strokes to expect from you. You're asking for a system that takes a user's poorly-written sequence of strokes and determines which character you meant. These seem like two very different situations.

In any case, modern operating systems have Chinese character recognition built in. ;)

Are you insinuating that Windows is not modern, or has Microsoft actually gotten around to implementing that?
And yes, Skritter does not do character recognition. It matches your input to a preloaded character and decides whether your input it passable.

Laspimon, that is exactly what I was implying. But it's okay, I used an emoticon to show I was joking. ;)