IssueTracker

This feature would also solve some of the "smudge" issues discovered in the recent study that was highly popularized in the media. That study showed that the old swipe pattern could be easily determined by analyzing smudges on the device glass.

Using a pin mitigates this problem a little, but having a random key combination makes it basically impossible to discover a pin by looking at smudges.

The important part there is IMHO not only to randomize the keypad each time the PIN is required but between each keystroke. Otherwise, PINs containing a number twice would be recognized by smudges as well (thus limiting the PINs to check for an intruder).

I was hoping that there was an app out there that did this.  How hard would it be to implement?  I would definitely use this lock method if it was available.

Any idea? I have been looking for this for a while and have now just decided to post and ask about it also.

With the advent of devices connecting into the workplace, we now have to worry more about security instead of worrying if anyone see's that I am cheating on my significant other.

I saw somewhere that someone had a java app that replicated the same function of a random keypad. Anyone want to take on this venture?

I find it strange that this basic security feature that seems trivial to implement is absent.
As mentioned before the layout should be randomized on each input.

The traditional input of a series of digits (0 through 9) is probably less suitable when the layout is randomized. It's cognitively difficult for humans to find the right number in an unexpected layout.
I'd suggest colors and/or shapes instead and probably less than 10 different. Less than 10 options per character would obviously require more characters. However, that might be heavily out-weight by the grease-on-screen-factor!

I hope to see a more innovative lock-screen soon!

Obsolete: Similar to Unreproducible, but with a reasonable certainty that the bug did exist in the reported version but was already fixed in a later release.

So does this mean that this feature is implemented in later version of Android? I know this is still an active request even though it is old.

https://code.google.com/p/android/issues/detail?id=74338  (Active as of 6 days ago)

This was actually implemented in CM11. I use it everyday. I love it. My wife hates unlocking my phone. I'd say success!

Yes I have been following it and waiting for an update on it.