Video screens are infiltrating every type of commercial realestate, including retail, transit, cinema and office locations.They've already earned must-have technology status in officebuildings, retail stores, airports, gas stations, hospitals andeven elevators.

"Tenants spend about three minutes a day watching content onscreens in office lobbies," says Jim Harris, CEO of Office Media Network,a privately held Chicago-based company and operators of The WallStreet Journal Office Network. Since forming the lobby- andelevator-based network information system in June 2006, it hasexpanded from 10 buildings to 560 buildings in 15 markets.

Advertisers describe the spread of video screens as digitalsignage and out-of-home media: technologies that connect withconsumers in captive environments. The screens carry a combinationof proprietary content, in-house messages and targeted ads sellingeverything from cell phones to cars, giving property owners anopportunity to inform, entertain and earn.