The HID iCLASS Tag can turn a plastic ID badge into an iCLASS contactless smart card credential. Effortlessly upgrade from Prox, mag stripe or barium ferrite technology to a smart card technology with more secure access control by simply attaching the small, circular iCLASS Tag to your existing card. The iCLASS Tag will also adhere to any non-metallic device to instantly create a contactless smart card.