Insignia Systems, Inc. (Nasdaq:ISIG) announced today the addition of Met Foodmarkets and Pioneer Food Stores to its Insignia POPS network of supermarket retailers. The Insignia POPS Program will roll out in 139 stores mostly in New York, with a few located in New Jersey and Pennsylvania. Both Met Foodmarkets and Pioneer Food Stores are part of White Rose Food, headquartered in New Jersey.