Passive RFID token tags can come in a variety of forms and frequencies, but there are two main types:
- Low-frequency (LF) passive RFID token tags: These operate at a frequency range of 125 kHz to 134 kHz and typically have a read range of up to 10 cm. LF tags are commonly used for access control, time and attendance tracking, and animal tracking.
- High-frequency (HF) passive RFID token tags: These operate at a frequency range of 13.56 MHz and typically have a read range of up to 1 meter. HF tags are commonly used for payment systems, public transportation, and inventory management.
- There are also ultra-high-frequency (UHF) passive RFID token tags, which operate at a frequency range of 860 MHz to 960 MHz and can have a read range of several meters. UHF tags are commonly used in logistics and supply chain management.
In addition to these frequency types, there are also different form factors and designs for passive RFID token tags, such as key fobs, cards, wristbands, and labels. The specific type and design of the tag will depend on the intended use case and environment.