Clear Channel Plans To Roll Out Digital Billboards

Tree131 writes "Just in case you don't have enough distractions driving on the highway, Clear Channel is planning to roll out digital billboards. The new billboards will feature ads that depend on the time of day as well as the general area demographics. I wonder how long before someone with lots of time on their hands hacks into the system and starts tampering with the messages."

Comments

Re:Too many temptations

[Technician]

If they use a regular FM broadcast (why pay a paging company) and it's subchannel to send the information to the billboard, then the protocol would be sniffable. The trick would be swamping the input on the billboard to get your signal into it. You would have to be pretty close to do it since you are competing with a 50KW station most of the time.

For more information on subchannels, Google SCA subchannel.