>>719912594
>>719912695
We had a megathread when an exploit surfaced for the old school Club Nintendo (the one that sent cool merch to your house, not the gay and retarded My Nintendo in the Switch). Basically, they allowed you to redeem coins by registering your console's serial number, but they wouldn't check whether the number was actually real.
What I did is that I made a little python script that bruteforced many serial numbers. To my surprise, it worked: I got enough coins to redeem for a set of Smash 4 posters that way (because otherwise you need to seriously pig out on nintendo stuff to be able to redeem anything worthwhile).
Of course, they caught up to it and they banned all of the accounts that used the exploit. Still worth it.