I don't want to induce Jerry Ketel to toss his breakfast or lunch, but we've learned that CKE Restaurants, owner of Carl's Jr. and Hardee's has developed their own location-based check-in app. The app, dubbed Happy Star Rewards, is now available on the iPhone and Android platforms, and invites users to check in when they dine in either of the restaurants. The first check-in earns the user a spin of "The Wheel of …
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