You will want to find a program that has a backup of the chip on the Mifare card. You will want to do this before you start copying the chip from the card. This will help you if you do not get your Mifare card back and you cannot use it.
After you clone mifare card, you will then have the same protection that the original card has. This is great for those who have a card that is lost or stolen, but are unable to use the card. If you have the right software, you can clone a Mifare card to keep it protected in the event of this happening.
Clone Mifare cards are fairly easy to do. You just have to be careful when copying the card and making copies. You should never put the Mifare logo on the card if you have a copy because it could cause the card to be copied and used for someone else.
It is quite obvious that a clone would be cheaper and of poor quality. Therefore, the clone RFID Fob manufacturers have taken up this idea and started creating their own unique RFID Fobs.