The E-ticket FAQ includes this item:
Can an attendee buy a E-Ticket from me the Event Host?
Yes, if they have a valid payment method on-file in their Gen Con account, the smartphone app will prompt you to sell them an E-Ticket.
Where would someone enter the payment method? I've checked my profile, and the other items in the Account dropdown, and I don't see a way to enter this anywhere. The other FAQ's have no information about this. I know that every time I've made a purchase, I've had to re-enter my CC information.
The reason for asking is that there are two discussions on the Friends of Gen Con FB page concerning someone getting ahold of a person's badge barcode (maybe from a pic of the badge posted online), then printing a fake badge with that barcode and using it to charge events to that person.
Is that even possible, since there doesn't seem to be a way to save a payment method?