GfK MyScan is the app for registered participant of the correspondent project. With this app you can scan your purchases, put in products without bar codes, take receipt photos and send the purchase to GfK. We reward you for your efforts with premiums. This is how you can use the app as a registered participant: 1. Install the app on your smartphone 2. Scan the QR-Code, we send you via mail or click the activation link on your smartphone. 3. You are ready to start!