Do they really only work if their "activated" at the register? How can they really work within ONE MINUTE of you scanning it at the register. Personally I think it's a load of b/s. I can't personally test it here because all of the g/c's are right by the register and they make u purchase them right there, u cant walk around with them or even stand by them. So that got me thinking, do you REALLY need to purchase it and have them scan it to "activate it"? The under one min. theory was proven, I had my phone up in amazon, ready to purchase a part for my pc ready to purchase it for like $20, a friend of mine is the manager, so he let me scratch it off before he scanned it, i already paid for it and all, and had the number already punched in. he scanned it, within 5 seconds, I hit enter and confirmed it and all, and it WORKED. now how can their systems process it THAT FAST. I personally think it's a load of bs that you have to scan it to activate it, but who knows.