In the land of beacons and mobile wallet marketing, it’s pretty simple to send an offer to a mobile device based on location, proximity or other contextual elements.  So simple that new studies are proving just how effective it can be –

Read more at MediaPost – 

Several new studies are out indicating that the growth of beacons around the world is on the march and that when shoppers get a mobile coupon, offer redemption is right behind, sometimes in fewer than two minutes.”