PlaceIQ recently announced a partnership with Starcom MediaVest Group (SMG) to launch the Place Visit Rate, a way to monitor the ratio of people who view mobile advertising for a physical retailers and are later observed in a bricksandmortarstore.
If you are a bricks-and-mortar retail store, focus your outreach locally, so that you can emphasize your coziness and convenience, which resonates more with Boomers than with younger consumers (and works with the Greatest Generation, too).