The All-In-One Credit Card designed by Kim Young Suk is an innovative and excellent way in which to carry only one card but have all the data and information for every credit card you carry in one location.

With this credit card, you use the slot for the memory to upload all your credit card details. At the other end of the gadget is a knob that you turn to pick which credit card you wish to use for the transaction. The display will show an identical copy of the credit card you choose and the strip on the back of the gadget has the same info that is found in the credit cards magnetic strip. After you use the gadget to complete the transaction, the receipt will be displayed. The information will then be stored in the memory of the gadget and there is no paper to worry with at all.

All the device really does is combine all the information from all of your credit cards into one gadget, which will provide better security, and less paper.

Via: Yanko Design