> What will be interesting though is the use of cryptography to protect things like our pin numbers at the checkout line. Once my professor said the ATM machin

> What will be interesting though is the use of cryptography to protect things like our pin numbers at the checkout line. Once my professor said the ATM machine in Japan randomized the order of the keys on the screen. I don't know how much effort it will require someone to upgrade the software to have a randomized keypad on the screen, but the risk of upgrading it is worth it.