Dynamic Inc. claims that credit cards with e-ink displays located on the front will be able to digitally and temporarily obscure sections of the credit card number – which means it will be a whole lot more difficult to check out what the number is if you are a fraudster, and the area itself will remain vacant – at least until the right PIN is entered physically by an authorized user.
At the back of the card, an e-ink display too, would be in place of the standard security code. This display will have a more interesting role to play, since it will offer a dynamically changing security code – further adding to the overall security of each individual transaction. How this will work remains to be seen, but it is a step in the right direction.