So, it's easy to point fingers at a scary sounding sub-system and scream, but has anyone done any true analysis of what the feature actually does?
There's plenty of ways to check this shit. Just off the top of my head, checking the files it accesses using process explorer would be a start. Should be pretty obvious if one of them grows with keystrokes.
Those are some pretty damn big claims for "trust me bro".
It used to be that with shit like this you could actually find stuff like "Hey, I've analyzed network traffic from the PC, and can confirm that once an hour it's sending encrypted data to a server in Redmond that matches the size of the image thumbnails generated by Explorer in the last hour. If Explorer hasn't generated thumbnails in that time, no data is sent." with receipts when someone claimed that MS was collecting everyone's image thumbnails.
Now it's just Microsoft bad! Trust me bro!
Regardless of validity though, it concerns me that people use their computers without taking 30 minutes to go through the settings and shut off shit they don't want.
Whether the implementation of this is a true keylogger or not, I get no benefit out of Microsoft analyzing my typing, and I'm not using any sort of touch screen or stylus so handwriting analysis is a waste too.
I disabled it within the first hour post-install.