Foursquare offers discounts to users who check in at participating retailers, but the social network is rolling out the feature in an exclusive deal with Walgreens.
The offer is available for iPhone, Android, and BlackBerry users and doesn't require any extra steps like printing, texting or unlocking special badges. Once you've checked in at participating stores, you can click to download the deal instantly to your phone, along with a scannable barcode. Walgreens already offers mobile coupons via its own well-received smartphone app, which launched on Black Friday last year. The drugstore received half a million downloads in the month of December alone.