The RFID Card Continuously Receives Add-Ons Billions of RFID cards produced and used for more than 20 years can't be wrong: Contactless cards are a success! The spectrum of possible applications is broad – from car rental to access control. For every letter in the alphabet at least one application area can be found. The RFID card owes this success to the high flexibility of the card design. The smart interior - the RFID chip and antenna – is the technological focus. The optical design options as well as the additions of envelopes, lanyards, and more make the RFID card the authentication medium of choice in applications worldwide. The Ulm-based RFID company AEG ID specialises in the development and production of RFID cards in the LF, HF, and UHF frequency ranges as well as combination solutions that are precisely tailored to the requirements of the respective users. Although billions of RFID cards are in use, 100 % reliable hardware is particularly important in security-relevant authentication processes, such as machine activation. RFID & Wireless IoT Global spoke to Simon Arch, Marketing and Sales Director, AEG ID, about why an RFID application can still be used in plug-and-play form on machines.