Digital signage or narrowcasting is the broadcasting of a tailored message via (interactive) digital information screens for a specific target group. This kind of communication through screens is sometimes called screen communication.
In other words, you control who gets to see what message, at what time, and in what location. This makes digital signage (or narrowcasting) a hugely powerful communication channel for both shops and businesses to inform, entertain, and engage employees, customers, and visitors.