Those little cards in cameras and phones are about to get much smaller. At .47 x .35 of an inch, it is 60% smaller than the regular SIM cards in a majority of the devices out on the market. It is also 15% thinner than previous SIM cards. They will be out early next year. A few reasons why this is important - they are cheaper, also they are smaller so there is more room in devices (or the devices can be smaller), and they are faster.
The best reason is they have nano in their name and I love anything nano.