A simple way to prevent credit card fraud?
Ok, I'm not a cryptographer, so I might be missing something here big time.But the whole PSN-disaster (I'm a customer) made me think: there is good reason to store credit card information, like the PSN did. Because, frankly, I'd be annoyed to enter a 16 digit number each time I buy some 10 buck game.But why can't SONY (and anybody else who works with credit-cards) just encrypt them with a...