Someone in Austin, Texas hacked a construction road sign to warn motorists of zombies on the road ahead. Of course, they threw in a Call Of Duty: World At War reference as well.

And though it is a class C misdemeanor, it seems that the trick is actually rather easy to pull off. Gizmodo informs us that while most control pads for road signs are inside of lockboxes, the boxes are rarely locked and the passcodes used to protect the signs from hacking are usually the default "DOTS", or can be reset easily by holding down "shift" and "ctrl" while typing "DIPY" (this will change it back to "DOTS").