I'm not sure which way this whole ePlate thing is going but the fact that we even have to discuss this is stupid. I like Jack and everything these guys are doing, but this just sounds ridiculous.
If you want to sell extra content or upgrades etc - do it like everyone else DLC thru a service. Rebuild your website - wifi/bluetooth enable the woz do exclusive online content downloads by mobile. Verify a code you need to enter just like WoW mobile authenticator so people can't steal it.
forget about credit card companies and all this other crap, one thing this country doesn't need is more people in debt, and unless your going to offer me a $1000 discount on a WoZ by buying it with this specific credit card, this is a bad idea.
Standard code should be universal for tournament play and any LE or route guys.
Build extra downloadable content like:
Turn Toto into a tiger during Toto escape mode 99¢
super extra crazy hard mode cow tornado mode: 99¢
play angry birds on the LED display: $1.50
JJP remote - airplay your Ipad or mobile device to the monitor (play pandora and other streaming content thru your WoZ)
Let me know if you want to hire me - because so far this idea sounds terrible