Well, I think I found his post on the subject. The fun is that there is zero cleanup afterwards.

The final solution. Hydrogen tri-Fluoride.

Wanna see a zombie melt?

Ironraven runs off screaming again...

I think this stuff would even have Blast a bit worried.

You won't think it's a joke when they come stumbling across your yard.

*scratching behind my ear with my foot*

Huh?

I don't remember you making me run screaming into the night.

EDIT

Oh, now I remember. You wanted to dissolve them with very scary compounds of florine and chlorine. *shudders* Yeah.... It would work.

The don't stumble, the shamble.

Unless they are howlers, those things are too agile. I hate the fast ones.

Hell yes! That stuff is the wet cat of chemicals...

-Blast

Just wanted to speak up as another cross-poster. Although I don't post too much on either forum, I pretty much just have to search or wait a couple of hours to get any answers I need.

Amazing how much we aren't talking about zombies!

A bit worried, try very scared.

That is real nasty stuff.

Anyway on a more to the point subject how useful
do you think signs like these or the low power
broadcasts would be in an emergency.

My feeling is that most of the person who would be
setting them up would be long gone before they would be of any use.

Back on the original topic, kinda, here's a story of different kind of problem in hacking traffic signs & signals: some government & police in Italy are in trouble for hacking traffic lights at stop light cameras to make money off of illegal "running a red light" tickets.