There are generally two types of passive RFID tags that are commonly used in library applications:
High Frequency (HF) passive RFID tags: These tags operate at a frequency of 13.56 MHz and have a read range of up to 1 meter. They are commonly used in library applications for tracking books, CDs, and DVDs.
Ultra-High Frequency (UHF) passive RFID tags: These tags operate at a frequency range of 860-960 MHz and have a read range of up to 10 meters. They are commonly used in library applications for tracking larger items such as laptops, tablets, and other electronic devices.
Both types of tags do not require batteries and are powered by the reader's electromagnetic field. They are cost-effective, durable, and can be read quickly and accurately, making them ideal for use in libraries.