Target has launched a nationwide coupon effort that allows consumers to redeem coupons through scanning 2D barcodes on their mobile phones. Coupons are available on the web and are scanned at checkout for redemption. “Target is the first national retailer to offer a scannable mobile coupon program that allows guests to receive exclusive offers directly on their mobile phones,” said Leah Guimond, spokeswoman for Target, Minneapolis, MN.