Among recent innovations to take a prominent place among influence-peddling electronics are flat-screen, TV-like tablets dotting the walls of many public places, providing pertinent messages. They’re called digital signage. You can find them mounted in front of churches to announce next Sunday’s sermon, on bar walls depicting sport shows and papering the walls of many commercial enterprises.
 
A significant addition to billboards, TV ads and fliers, they serve as a means of getting one’s business message across rapidly and with a bit of flair. The hardware consists of a display screen or screens, a media player or ...