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The only way I know of to prevent duplicate accounts is to give people a code to redeem that is tied to a physical address. In other words, mail them a post car
by ScottWhigham 17y ago
The only way I know of to prevent duplicate accounts is to give people a code to redeem that is tied to a physical address. In other words, mail them a post card with a redemption code on it and only mail one card to one address. I'm sure this can be readily abused too though!
- icey 17y agoI could have a card sent to my house, my work, my parent's house, my brother's house, a PO box, my neighbor's house, etc.