One of the things I noticed, every e-mail that I get for a game that I purchased, the e-mail contained some level of cryptographic hash for the payment key, or maybe it's just a GUID or something like that...
One of the things I noticed, every e-mail that I get for a game that I purchased, the e-mail contained some level of cryptographic hash for the payment key, or maybe it's just a GUID or something like that...