CardStar is an interesting iPhone application that allows users to consolidate all their various reward cards, club cards and such into one application. The premise is that you’d walk into a store, open up the CardStar application, and the clerk can literally scan your phone to find your rewards account. Taking this to a new level, the latest release of CardStar now integrates with Foursquare, allowing users to check in while they use their loyalty card at a given store. What CardStar doesn’t talk about, is how merchants can take advantage of their clients checking in at their store. I examine the potential below.
