That's as annoying as checking my receipt and bag when leaving the store

Stores here in Colorado Springs rarley do this. CompUSA has a greeter of sorts to see if you need directions to a product. They also typicially watch the checkout lines, but never check reciepts. Best Buy will check reciepts when you bring a product in the protective plastic to them, as they keep the device to open those at the door and not at every register. Beyond that, they only check when the door alarm goes off.

This practice of checking reciepts caught me off guard at Fry's when I was in California last year. As did the stupid queuing method.