According a
report on
i-hacked.com, the programmable road signs that are ubiquitous these days are
often unprotected against being re-programmed by unauthorized people. 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.