(Twin Cities) Star-Tribune: True metrics for digital signage effectiveness are still being aggregated, but one thing is for sure: Digital signs are serving as a new frontier in advertising. And four Twin Cities software companies are competing for a piece of the market. BroadSign International, Wireless Ronin Technologies, Telentice Global and 3M digital signage, provide software that ensures digital signs display the right information or advertising at the right place and time.
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