This is a workshop about Radio-frequency Identification (RFID), including a basic introduction and a set of practical hands-on challenges. We will start with explaining the theory behind RFID, including the different types and protocols (insecure vs. secure types) and how to perform an RFID assessment. Afterwards, the participants can take on several challenges (of increasing difficulty) with RFID readers that we will provide. Our objective is to make this workshop fun and accessible to a wide audience.