I've been looking forever for a blank lock screen like this! Where you have to draw any pattern without showing those stupid bubbles.
Whoever is using that probably just replaced the dot images with a transparent images. So you're still connecting the dots, but they're invisible.
If you still want it I can make you a MM theme that does this.
You can do that from a normal unrooted phone I believe. It's with the lock pattern selections. menu->settings->location and security->uncheck visible lock pattern
It may just be with a rooted phone tho, I'm on BuglessBeast .9 and it has it, I thought I did before I rooted though.
Das B.A.M.F. @ 1.4Ghz
it would be dope if someone came up with a lockscreen that allowed you to draw your own custom shape instead of connecting 9 dots
anyways, thanks (gotta have that funk)