The Art of RFID Hacking

Many places use cards or badges to gain access to secure areas. These areas can be server rooms and control centers and are even used to gain access to hotel rooms. These cards carry an RFID(radio frequency identification) specific to what the card reader is looking for and give us access when the correct ID is read. These cards/badges are pretty easily hacked, and their stored data is copied to be used by the hacker whenever they please. The hacker doesn't have to steal anyone's card to copy it; they need a device such as the Tastic RFID Thief. The Tastic is a device that can copy an RFID from feet away. Someone needs to be in proximity, and they can have the necessary information to gain access to anything that card/badge allows, a massive problem that not many people know about and needs to be addressed. One solution would be to eliminate those RFID cards, and the problem would disappear. However, for places such as hotels, this system is a convenient way to give keys to their guests. So, another solution to protect the data on these cards would be to have a jammer, which would block any unwanted source from obtaining its data but would allow the ID to be read by the appropriate door scanner. This might be impossible or require a battery to keep the jammer active. This, of course, means the card would have to be charged, which is another issue. For a third solution, the card could also store a digital signature that couldn't be copied and, if tried, would be slightly different from the actual signature. With this solution, only the cards with the correct signatures and IDs would allow access by the reader.