January 23, 2009 1:16 PM PST

Hacking programmable road signs

By Daniel Terdiman
News.com

http://news.cnet.com/8301-13772_3-10149229-52.html?tag=pop


We see them everywhere these days, digital signs by the side of the road 
telling us about road conditions or that we should prepare to stop or that 
our local bridge might be closed next Tuesday from noon to midnight. And if 
you're like me, you've always just assumed that the message on the signs is 
legitimate and properly authorized.

But what if the sign, instead of reading something like "Ice Ahead" was 
flashing the message, "Zombies Ahead"?

It's true that in San Francisco or a few other cities, such a sign could be 
put up by local transportation officials to warn people of an impending 
zombie march, but even in those places, the more likely explanation would 
be that the sign was hacked.

And if you're in the Boston area and saw signs hacked in this way, there's 
always a decent chance it was done by students from MIT.

According to the blog i-hacked.com, some programmable road signs are easily 
messed with, largely because they often have unlocked instrument panels, a 
text-entry system that is easily accessed, and are often protected with 
uncomplicated, or unchanged default passwords.

"Programming is as simple as scrolling down the menu selection to 'Instant 
Text,'" i-hacked reported. "Type whatever you want to display, (and) hit 
'enter' to submit. You can now either throw it up on the sign by selecting 
'Run w/out save' or you can add more pages to it by selecting 'Add page.'"

Of course, you probably don't want to do this in plain view of any law 
enforcement officials, and i-hacked led its post with a disclaimer warning 
against ever performing this hack. So here at Geek Gestalt, we'll just say 
that it's interesting that this could be such an easy thing to do and leave 
it at that.


=================================================
George Antunes                    Voice (713) 743-3923
Associate Professor               Fax   (713) 743-3927
Political Science                    Internet: antunes at uh dot edu
University of Houston
Houston, TX 77204-3011         

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