I got a Xperia Mini Pro with a physical keyboard. When I slide out the keyboard, it still have to slide on the screen to unlock it. Can I get to the password prompt with the keyboard movement alone?
Yes it's possible with tasker + secure settings plugin.
I dit it in a harder scenario (altough I'm an sk17i owner too) I used the above combination to unlock, force landscape, and wake up an alcatel dual sim phone paired with a Nuu minikey sliding bluetooth keyboard.