The CardSharp 2 is a slim pocket knife that flattens out to the size and shape of a credit card for storage and transport. Just 3 folds are needed to transform and prep the knife for use. The knife blade is made from surgical stainless steel, and the polypropylene body features a built-in sheath.
This is the type of pocket knife that turns heads. It definitely has serious appeal, with its slim profile, light weight and unique deployment. You can purchase one for £15 ($23-25) plus a small fee for international shipping.
With less moving parts and a polymer handle, the CardSharp is a bit cheaper than other low-profile knives such as the Sog Access Card. We just might need to order one for ourselves to try out.
Edit: Robert shared a very insightful comment and a reminder that you should be familiar with the laws where you live before you buy something like this!