All of our products are barcoded. Use our custom barcode scanner App for mobile smartphone & tablets to scan the redeemed pieces, which tells our backend database exactly who has redeemed so we can tweak their offer next time. For example, if you were sending a 30% off out to 1000 households, and 100 redeemed it, if you scanned those 100, we can do interesting things with that knowledge, like choose to avoid those people for the next discounted mailing or give them a reduced 15% off since we know they're an active redeeming customer. This intelligence in marketing is what separates you from your competition while giving you maximum efficiency with your advertising dollars.