Point-of-purchase (POP) advertising is in-store advertising that is meant to catch the attention of shoppers while they are in an establishment. This type of advertising used to be mostly printed, static signage, banners shelf call-outs, endcap displays, and the like. But recent technological developments have opened up a much wider range of POP advertising opportunities. Stores now use overhead music as a way to influence buyers, and short ads may be interspersed at designated intervals to alert shoppers of specials, promoted brands, seasonal items, upcoming store events, or anything else the store wants to share.Digital signage is used in much the same way as overhead messaging, but adds an exciting visual element to the mix. Studies have shown that digital media is up to 7 times more effective than printed posters, and that consumers are 5 to 10 times more likely to respond to dynamic messaging than static print signage.