"The customer walks into a shopping center and activates his/her WiFi browser (free, branded, downloadable app) to see which stores offers what e.g. trials, demo's, vouchers, special offers; right now!" - our partner Clicode presents SpotEx.
Btw, they (Clicode) offers a lot of QR-code based solutions too. Some of them are also based on components from our QR-code suite.